This file is indexed.

/usr/share/tcltk/tcllib1.18/tepam/tepam.tcl is in tcllib 1.18-dfsg-3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
##########################################################################
# TEPAM - Tcl's Enhanced Procedure and Argument Manager
##########################################################################
# tepam.tcl - TEPAM's main Tcl package
# 
# TEPAM offers an alternative way to declare Tcl procedures. It provides 
# enhanced argument handling features like automatically generatehd, 
# graphical entry forms and checkers for the procedure arguments.
#
# Copyright (C) 2009/2010/2011 Andreas Drollinger
# 
# Id: tepam.tcl
##########################################################################
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
##########################################################################

package require Tcl 8.3

namespace eval tepam {
   # Exports the major commands from this package:
   namespace export procedure argument_dialogbox

##########################################################################
#                            procedure                                   #
##########################################################################

   ######## Procedure configuration ########
   
   # Set the following variable to 0 (false) prior to the procedure definition, to
   # use first the unnamed arguments and then the named arguments.
   set named_arguments_first 1
   
   # Setting the following variable to 0 will disable the automatic argument name
   # extension feature.
   set auto_argument_name_completion 1

   # Set the following variable prior to the procedure definition to:
   #   - 0 (false): to disable command logging
   #   - 1 (true): to log all commands anytime
   #   - "interactive": to log only interactively called commands
   set command_log "interactive"
   
   # Set the following variable to "short" to generate small interactive dialog boxes.
   set interactive_display_format "extended"

   # The following variable defines the maximum line length a created help text can have:
   set help_line_length 80

   ######## Internal variables ########

   if {![info exists ProcedureList]} {
      set ProcedureList {}
   }

   ######## PureProcName ########

   # PureProcName purifies the procedure name given by the ProcName variable of the calling 
   # function and returns it. PureProcName is basically:
   # * Eliminating the main namespace indicators
   # * Encapsulating the name into '' if it is a composed name
   proc PureProcName {args} {
      upvar ProcName ProcName
      set Name $ProcName
      regsub {^::} $Name {} Name; # Eliminate the main namespace indicators
      if {[lsearch $args -appo]>=0} { # Encapsulate the name into '' if it is a composed name
         set Name "'$Name'"
      }
      return $Name
   }

   ######## Procedure help text ########
   
   set ProcedureHelp {
      procedure <ProcedureName> <ProcedureAttributes> <ProcedureBody>

      <ProcedureAttributes> = {
         [-category <Category>] 
         [-short_description <ShortDescription>]
         [-description <Description>]
         [-return <Return_Type>]
         [-example <Example>]
         [-named_arguments_first 0|1]
         [-command_log 0|1|"interactive"]
         [-auto_argument_name_completion 0|1]
         [-interactive_display_format]
         [-validatecommand <ValidateCommand>]
         [-validatecommand_error_text <ValidateCommandErrorText>]
         [-args <ArgumentDeclarationList>]
      }

      <ArgumentDeclarationList> = {<ArgumentDeclaration> [ArgumentDeclaration ...]}

      <ArgumentDeclaration> = {
         <Argument_Name>
         [-description <ArgumentDescription>]
         [-type <ArgumentType>]
         [-validatecommand <ValidateCommand>]
         [-validatecommand_error_text <ValidateCommandErrorText>]
         [-default <DefaultValue>]
         [-optional | -mandatory]
         [-choices <ChoiceList>]
         [-choicelabels <ChoiceLabelList>]
         [-range {<MinValue> <MaxValue>}
         [-multiple]
         [-auxargs <AuxilaryArgumentList>]
         [-auxargs_commands <AuxilaryArgumentCommandList>]
      }

      <ArgumentType> = {
         none double integer alnum alpha ascii control digit graph lower 
         print punct space upper wordchar xdigit color font boolean ""
      }
   }

   # Eliminate leading tabs in the help text and replace eventual tabs through spaces
   regsub -all -line {^\t\t} $ProcedureHelp "" ProcedureHelp
   regsub -all -line {\t} $ProcedureHelp "   " ProcedureHelp

   ######## Procedure ########

   # Procedure allows declaring a new procedure in the TEPAM syntax:
   #
   #    procedure my_proc {
   #       -args {message}
   #    } {
   #       puts $message; # Procedure body
   #    }
   #
   # Procedure creates in fact a TCL procedure with a patched procedure body. This body calls at 
   # the beginning an argument parser (ProcedureArgumentEvaluation) that is reading and validating 
   # the arguments that have been provided to the procedure. The previous lines are for example 
   # creating the following TCL procedure:
   #
   #    proc my_proc {args} {
   #       ::tepam::ProcedureArgumentEvaluation;
   #       if {$ProcedureArgumentEvaluationResult!=""} {
   #          if {$ProcedureArgumentEvaluationResult=="cancel"} return;
   #          return -code error $ProcedureArgumentEvaluationResult;
   #       }
   #       if {$SubProcedure!=""} {return [$SubProcedure]};
   #
   #       puts $message; # Procedure body
   #    }
   #
   # ProcedureArgumentEvaluation uses the TCL procedure's args argument to read all the provided
   # arguments. It evaluates first if a sub procedure has to be called. This information and the
   # argument validation result are provided to the calling procedure respectively via the 
   # variables SubProcedure and ProcedureArgumentEvaluationResult. In case the result evaluation
   # was not successful, the calling procedure body will simply return. In case the procedure
   # call refers to a sub-procedure, this one will be called. Otherwise, if a valid argument set
   # has been provided to the procedure, and if no sub-procedure has to be called, the original
   # procedure body is executed.
   # Procedure behaves slightly differently in case one or multiple sub-procedures have been 
   # declared without declaring the main procedure itself:
   #
   #    procedure {my_func sub_func} {
   #       -args {message}
   #    } {
   #       puts $message; # Procedure body
   #    }
   #
   # Procedure creates in this case for the main procedure a Tcl procedure as well as for the sub
   # procedure. The main procedure creates an error when it directly called. The sub-procedure
   # is executed within the main procedure's context using the uplevel command.
   #
   #    proc my_proc {args} {
   #       ::tepam::ProcedureArgumentEvaluation;
   #       if {$ProcedureArgumentEvaluationResult!=""} {
   #         if {$ProcedureArgumentEvaluationResult=="cancel"} return;
   #         return -code error $ProcedureArgumentEvaluationResult;
   #       }
   #       if {$SubProcedure!=""} {return [$SubProcedure]};
   #       error "'my_func' requires a subcommand"
   #    }
   #
   #    proc {my_proc sub_func} {args} {
   #       uplevel 1 {
   #          puts $message; # Procedure body
   #       }
   #    }
   #
   # Procedure parses itself the procedure name and attributes and creates the new TCL procedure 
   # with the modified body. For each declared argument it calls ProcedureArgDef which handles the 
   # argument definition.

   proc procedure {args} {
      variable ProcDef
      variable ProcedureHelp
      variable named_arguments_first
      variable command_log
      variable auto_argument_name_completion
      variable interactive_display_format
      variable ProcedureList

      #### Check if help is requested and extract the (sub) procedure name ####

         # Check if help is requested:
         if {[lsearch -exact $args "-help"]>=0} {
            puts $ProcedureHelp
            return
         }

         # Check that the procedure name, argument list and body has been provided:
         if {[llength $args]!=3} {
            return -code error "Missing procedure arguments, correct usage: procedure <ProcedureName>\
                   <ProcedureAttributes> <ProcedureBody>"
         }
      
         # Evaluate the full qualified procedure name including a leading name space identifier.
         # Evaluate the current namespace in case the procedure is not defined explicitly with 
         # a name space:
         regsub -all {\s+} [lindex $args 0] " " ProcName
         if {[string range $ProcName 0 1]!="::"} {
            set NameSpace [uplevel 1 {namespace current}]
            if {$NameSpace!="::"} {append NameSpace "::"}
            set ProcName ${NameSpace}${ProcName}
         }

         # Extract the procedure attributes and the procedure body:
         set ProcedureAttributes [lindex $args 1]
         set ProcedureBody [lindex $args 2]

         # Store the procedure name in the procedure list, if it is not already existing:
         if {[lsearch -exact $ProcedureList $ProcName]<0} {
            lappend ProcedureList $ProcName
         }

      #### Initialize the procedure attributes ####

         # Clean the information of an eventual previous procedure definition, and store
         # the actual configured procedure modes:
         catch {array unset ProcDef $ProcName,*}
         set ProcDef($ProcName,-named_arguments_first) $named_arguments_first
         set ProcDef($ProcName,-command_log) $command_log
         set ProcDef($ProcName,-auto_argument_name_completion) $auto_argument_name_completion
         set ProcDef($ProcName,-interactive_display_format) $interactive_display_format

         # The procedure information will be stored in the array variable ProcDef.
         # The following array members are always defined for each declared procedure:
         set ProcDef($ProcName,-validatecommand) {}
         set ProcDef($ProcName,-validatecommand_error_text) {}
         set ProcDef($ProcName,VarList) {}
         set ProcDef($ProcName,NamedVarList) {}
         set ProcDef($ProcName,UnnamedVarList) {}
         #  ProcDef($ProcName,NbrVars); # 
         #  ProcDef($ProcName,NbrNamedVars)
         #  ProcDef($ProcName,NbrUnnamedVars)

         # The following array members are defined optionally in the argument parsing section:
         #  ProcDef($ProcName,$AttributeName)
         #                    | AttributeName = {-category -return -short_description 
         #                    |                  -description -example}
         #
         #  ProcDef($ProcName,Arg,$Var,IsNamed)
         #  ProcDef($ProcName,Arg,$Var,-type)
         #  ProcDef($ProcName,Arg,$Var,-optional)
         #  ProcDef($ProcName,Arg,$Var,-validatecommand)
         #  ProcDef($ProcName,Arg,$Var,-validatecommand_error_text)
         #  ProcDef($ProcName,Arg,$Var,-default)
         #  ProcDef($ProcName,Arg,$Var,HasDefault)
         #  ProcDef($ProcName,Arg,$Var,-multiple)
         #  ProcDef($ProcName,Arg,$Var,-description)
         #  ProcDef($ProcName,Arg,$Var,-choices)
         #                    | Contains the choice list: {<Choice1> ... <ChoiceN>}
         #  ProcDef($ProcName,Arg,$Var,-choicelabels)
         #                    | Contains the choice label list: {<ChoiceLabel1> ... <ChoiceLabelN>}
         #  ProcDef($ProcName,Arg,$Var,-range)
         #  ProcDef($ProcName,Arg,$Var,SectionComment)
         #  ProcDef($ProcName,Arg,$Var,Comment)

      #### Parse all procedure attributes ####

         set UnnamedHasToBeOptional 0; # Variable that will be set to '1' if an unnamed argument is optional.
         set UnnamedWasMultiple 0;     # Variable that will be set to '1' if an unnamed argument has the -multiple option
      
         # Loop through the argument definition list:
         foreach {AttributeName AttributeValue} $ProcedureAttributes {
            # Evaluate the provided argument attribute
            switch -exact -- $AttributeName {
               -help { # Help has been required in the procedure attribute definition list:
                  puts $ProcedureHelp
                  return
               }
               -category -
               -return -
               -short_description -
               -description -
               -named_arguments_first -
               -command_log -
               -auto_argument_name_completion -
               -example -
               -interactive_display_format {
                  # Save all these information simply in the ProcDef array variable:
                  set ProcDef($ProcName,$AttributeName) $AttributeValue
               }
               -validatecommand -
               -validatecommand_error_text {
                  lappend ProcDef($ProcName,$AttributeName) $AttributeValue
               }
               -args {
                  # Read the procedure arguments with ProcedureArgDef
                  set Comment ""
                  set SectionComment ""
                  foreach arg $AttributeValue {
                     set ErrorMsg [ProcedureArgDef $arg]
                     if {$ErrorMsg!=""} {
                        return -code error "Procedure declaration [PureProcName -appo]: $ErrorMsg"
                     }
                  }
               }
               default {
                  return -code error "Procedure declaration [PureProcName -appo]: Procedure attribute '$AttributeName' not known"
               }
            }
         }

         # Complete the procedure attributes -
         # Number of arguments:
         set ProcDef($ProcName,NbrVars) [llength $ProcDef($ProcName,VarList)]
         # Number of named arguments
         set ProcDef($ProcName,NbrNamedVars) [llength $ProcDef($ProcName,NamedVarList)]
         # Number of unnamed arguments
         set ProcDef($ProcName,NbrUnnamedVars) [llength $ProcDef($ProcName,UnnamedVarList)]

      #### Create the TCL procedure(s) ####
      
         # Create now the TCL procedures. In case a sub procedure is declared, the created TCL 
         # procedure has not to call the argument evaluator, since this one has already been called 
         # in the main procedure. An additional main procedure is created if a sub procedure is 
         # declared and if no main procedure is existing.

         set Body    "::tepam::ProcedureArgumentEvaluation;\n"
         append Body "if {\$ProcedureArgumentEvaluationResult!=\"\"} \{\n"
         append Body "  if {\$ProcedureArgumentEvaluationResult==\"cancel\"} return;\n"
         append Body "  return -code error \$ProcedureArgumentEvaluationResult;\n"
         append Body "\}\n"
         append Body "if {\$SubProcedure!=\"\"} {return \[\$SubProcedure\]};\n\n"

         if {[llength $ProcName]==1} {
            append Body "$ProcedureBody"
            proc $ProcName {args} $Body
         } else {
            proc $ProcName {args} "uplevel 1 \{\n$ProcedureBody\n\}"
            if {[info commands [lindex $ProcName 0]]==""} {
               append Body "return -code error \"'[lindex $ProcName 0]' requires a subcommand\""
               proc [lindex $ProcName 0] {args} $Body
            }
         }
   }

   # ProcedureArgDef reads the definition of a single argument that is provided in form of a list:
   #
   #    -mtype -default Warning -choices {Info Warning Error} -description "M. type"
   #
   # ProcedureArgDef is executed by 'procedure'. The argument definition is provided via the 
   # argument 'ArgDef' variable. ProcedureArgDef is recognizing argument comments and section 
   # comments that can be placed into the argument definitions. ProcedureArgDef is also checking 
   # the validity of the argument specifications.

   proc ProcedureArgDef {ArgDef} {
      variable ProcDef
      variable ProcedureHelp
      variable named_arguments_first
      variable command_log
      variable auto_argument_name_completion
      variable interactive_display_format
      variable ProcedureList

      upvar ProcName ProcName
      upvar Comment Comment
      upvar SectionComment SectionComment
      upvar UnnamedHasToBeOptional UnnamedHasToBeOptional
      upvar UnnamedWasMultiple UnnamedWasMultiple

      # Read the argument name:
      set Opt [lindex $ArgDef 0]
         
      #### Handle section and argument comments, parse the option name ####
         
         # Check if the argument definition is a simply argument comment (either -, "" or {})
         if {$Opt=="" || $Opt=="-"} {
            # Eliminate the entire first word as well as any leading and tailing white spaces
            regexp {^\s*[^\s]+\s+(.*)\s*$} $ArgDef {} Comment
            regsub -all "\"" $Comment "\\\"" Comment
            return ""

         # Check if the argument definition is an argument section begin
         } elseif {[string index $Opt 0]=="\#"} {
            # Eliminate leading and tailing white spaces
            set SectionComment [string trim [string range $ArgDef 1 end]]
               
            # Eliminate the leading and ending #s and white spaces
            regexp {^\s*\#+\s*(.*?)\s*\#*\s*$} $ArgDef {} SectionComment
            # regsub -all "\"" $SectionComment "\\\" SectionComment
               
            # For an eventual interactive call that requires a GUI, swap to the short 
            # representation mode, since the frames are used to display the sections:
            set ProcDef($ProcName,-interactive_display_format) "short"
            return ""

         # Check if the argument is an option or a flag (named argument), that has with a 
         # leading '-':
         } elseif {[string index $Opt 0]=="-"} {
            set Var [string range $Opt 1 end]
            lappend ProcDef($ProcName,NamedVarList) $Var
            set ProcDef($ProcName,Arg,$Var,IsNamed) 1
   
         # The argument is an unnamed argument:
         } else {
            set Var $Opt
            lappend ProcDef($ProcName,UnnamedVarList) $Var
            set ProcDef($ProcName,Arg,$Var,IsNamed) 0
         }
         
         # Assign to the argument an eventually previously defined section or argument comment:
         if {$SectionComment!=""} {
            set ProcDef($ProcName,Arg,$Var,SectionComment) $SectionComment
            set SectionComment ""
         }
         if {$Comment!=""} {
            set ProcDef($ProcName,Arg,$Var,Comment) $Comment
            set Comment ""
         }

         # Check that an argument is not declared multiple times:
         if {[lsearch -exact $ProcDef($ProcName,VarList) $Var]>=0} {
            return "Argument '$Var' defined multiple times"
         }

      #### Define the argument attributes ####
         
         # Append the argument to the argument list and define the argument attributes with the
         # default values:
         lappend ProcDef($ProcName,VarList) $Var
         set ProcDef($ProcName,Arg,$Var,-type) ""; # Undefined
         set ProcDef($ProcName,Arg,$Var,-optional) 0
         set ProcDef($ProcName,Arg,$Var,HasDefault) 0
         set ProcDef($ProcName,Arg,$Var,-multiple) 0

         # Parse all argument attribute definitions:
         for {set a 1} {$a<[llength $ArgDef]} {incr a} {
            set ArgOption [lindex $ArgDef $a]
            set ArgOptionValue [lindex $ArgDef [expr {$a+1}]]
            switch -- $ArgOption {
               -type {
                  # Argument type definition: Check if the validation command is defined for 
                  # the used argument type:
                  if {[catch {Validate($ArgOptionValue) ""}]} {
                     return "Argument type '$ArgOptionValue' not known"
                  }
                     
                  # Store the attribute type:
                  set ProcDef($ProcName,Arg,$Var,-type) $ArgOptionValue
                     
                  # Flags (argument that have the type 'none') are always optional:
                  if {$ProcDef($ProcName,Arg,$Var,-type)=="none"} {
                     set ProcDef($ProcName,Arg,$Var,-optional) 1
                  }
                  incr a
               }
   
               -default {
                  # Arguments that have default values are always optional:
                  set ProcDef($ProcName,Arg,$Var,-default) $ArgOptionValue
                  set ProcDef($ProcName,Arg,$Var,HasDefault) 1
                  set ProcDef($ProcName,Arg,$Var,-optional) 1
                  incr a
               }
   
               -mandatory {# The -mandatory attribute is already the default behavior}
   
               -optional -
               -multiple {
                  # These attributes (flags) have just to be stored for future usage:
                  set ProcDef($ProcName,Arg,$Var,$ArgOption) 1
               }
   
               -range {
                  # Check that the range is defined by two values and that the min value is 
                  # smaller than the max value:
                  if {[llength $ArgOptionValue]!=2 || \
                      ![Validate(double) [lindex $ArgOptionValue 0]] || \
                      ![Validate(double) [lindex $ArgOptionValue 1]]} {
                     return  "Invalid range definition - $ArgOptionValue"
                  }
                  set ProcDef($ProcName,Arg,$Var,$ArgOption) $ArgOptionValue
                  incr a
               }
                  
               -validatecommand -
               -validatecommand_error_text -
               -auxargs_commands -
               -auxargs -
               -description -
               -choices -
               -choicelabels -
               -widget {
                  # Also these attributes have just to be stored for future usage:
                  set ProcDef($ProcName,Arg,$Var,$ArgOption) $ArgOptionValue
                  incr a
               }
   
               default {
                  # Generate an error if the provided attribute name doesn't match with a known
                  # attribute.
                  return "Argument attribute '$ArgOption' not known"
               }
            }
         }

      #### Perform various argument attribute validation checks ####

         # Unnamed argument attribute checks:
         if {!$ProcDef($ProcName,Arg,$Var,IsNamed)} {
            # Check that behind an optional unnamed argumeent there are only other optional 
            # unnamed arguments:
            if {$UnnamedHasToBeOptional && !$ProcDef($ProcName,Arg,$Var,-optional)} {
               return "Argument '$Var' has to be optional"
            }
               
            # Check that only the last unnamed argument can take multiple values:
            if {$UnnamedWasMultiple} {
               return "Attribute '-multiple' is only for the last unnamed argument allowed"
            }
               
            # Check the length of an optional -choicelabels list
            if {[info exists ProcDef($ProcName,Arg,$Var,-choices)] && \
                [info exists ProcDef($ProcName,Arg,$Var,-choicelabels)]} {
               if {[llength $ProcDef($ProcName,Arg,$Var,-choices)]!=
                   [llength $ProcDef($ProcName,Arg,$Var,-choicelabels)]} {
                  return "Argument '$Var' - Choice label list and choice list have different sizes"
               }
            }
               
            # Store the information about the argument attributes the check the consistency of 
            # the following arguments:
            if {$ProcDef($ProcName,Arg,$Var,-optional)} {
               set UnnamedHasToBeOptional 1
            }
            if {$ProcDef($ProcName,Arg,$Var,-multiple)} {
               set UnnamedWasMultiple 1
            }
         }
                     
         # Range checks are only allowed for integers and doubles:
         if {[info exists ProcDef($ProcName,Arg,$Var,-range)]} {
            if {[lsearch {integer double} $ProcDef($ProcName,Arg,$Var,-type)]<0} {
               return "Argument '$Var' - range specification requires type integer or double"
            }
         }

      return ""
   }

   ######## ProcedureArgumentEvaluation ########

   # ProcedureArgumentEvaluation is the argument evaluator that is embedded by the procedure
   # declaration command 'procedure' into the procedure's body in the following way:
   #
   #    proc my_proc {args} {
   #       ::tepam::ProcedureArgumentEvaluation;
   #       if {$ProcedureArgumentEvaluationResult!=""} {
   #         if {$ProcedureArgumentEvaluationResult=="cancel"} return;
   #         return -code error $ProcedureArgumentEvaluationResult;
   #       }
   #       if {$SubProcedure!=""} {return [$SubProcedure]};
   #
   #       puts $message; # Procedure body
   #    }
   #
   # ProcedureArgumentEvaluation has to define in the calling procedure two variables: 
   # The first one is ProcedureArgumentEvaluationResult that has to contain the result of the 
   # evaluation and validation of the argument set. Zero as results means that the provided 
   # arguments are OK and that the procedure body can be executed. A non-zero value indicates 
   # that the procedure body has not to be evaluated, typically because help was requested via
   # the -help option. In case of incorrect arguments an error is generated by 
   # ProcedureArgumentEvaluation.
   # The second variable that is created by ProcedureArgumentEvaluation is 'SubProcedure'. This
   # variable is set to the sub procedure name in case a sub procedure is called. If the main
   # procedure is called this variable is set to an empty string.

   # Delcare first a tiny helper function: ProcedureArgumentEvaluationReturn will assign the 
   # provided result string to the ProcedureArgumentEvaluationResult variable in the context
   # of the calling procedure and will then emulate a return function.

   proc ProcedureArgumentEvaluationReturn {Result} {
      upvar 2 ProcedureArgumentEvaluationResult ProcedureArgumentEvaluationResult
      set ProcedureArgumentEvaluationResult $Result
      return -code return
   }

   proc ProcedureArgumentEvaluation {} {
      variable ProcDef
      upvar args args
      upvar SubProcedure SubProcedure

      #### Extract the procedure and sub procedure names, call the procedure help if requested ####

         # Evaluate the complete main procedure name that contains the namespace identification:
         # The procedure name is given by the first element of 'info level':
         set ProcedureCallLine [info level -1]
         set ProcName [lindex $ProcedureCallLine 0]

         # Create the full qualified procedure name (procedure name including namespace)
         regexp {([^:]*)$} $ProcName {} ProcName
         set NameSpace [uplevel 1 {namespace current}]
         if {$NameSpace!="::"} {append NameSpace "::"}
         set ProcName ${NameSpace}${ProcName}

         # Evaluate the sub command names by checking if the first arguments are matching with
         # a specified sub command name:
         set SubProcedure ""
         while {1} {
            set ProcNameTmp "$ProcName [lindex $args 0]"
            if {![info exists ProcDef($ProcNameTmp,VarList)] && [array names ProcDef "$ProcNameTmp *"]==""} {
               # The argument is not matching with a specified sub command name (so it will be a
               # real argument):
               break
            }
            # Use the argument as sub procedure name:
            set ProcName $ProcNameTmp
            set SubProcedure $ProcName
            set args [lrange $args 1 end]
         }

         # Check if help has been requested in the procedure call:
         if {[lindex $args end]=="-help"} {
            ProcedureHelp $ProcName
            ProcedureArgumentEvaluationReturn "cancel"
         }

         # Check if the procedure call is an interactive call
         set InteractiveCall [string match "-interactive" [lindex $args end]]

         # Return an empty string if the main procedure has been called and if only sub-commands 
         # have been defined, but not the main procedure itself.
         if {![info exists ProcDef($ProcName,VarList)]} {
            ProcedureArgumentEvaluationReturn ""
         }

      #### Call an argument_dialogbox if the procedure has been called with'-interactive' ####
         set NewArgs {}
         if {$InteractiveCall} {
            # Start creating the argument_dialogbox's argument list with the title attribute:
            set DialogBoxArguments [list -title $ProcName -context $ProcName]

            # Add eventual global validation commands
            foreach ValidateCommand $ProcDef($ProcName,-validatecommand) {
               lappend DialogBoxArguments -validatecommand2 $ValidateCommand
            }
            foreach ValidateCommandErrorText $ProcDef($ProcName,-validatecommand_error_text) {
               lappend DialogBoxArguments -validatecommand2_error_text $ValidateCommandErrorText
            }

            # Create for each of the procedure arguments an entry for the argument_dialogbox:
            foreach Var $ProcDef($ProcName,VarList) {
               # Declare the result variables. These variables refer to the variables in the parent 
               # procedure (upvar). Attribute to these variables directly the default values that can be 
               # overwritten later with the new defined values.
               upvar $Var Variable__$Var

               # Create sections, write section and argument comments:
               if {$ProcDef($ProcName,-interactive_display_format)=="extended"} {
                  if {[info exists ProcDef($ProcName,Arg,$Var,SectionComment)]} {
                     # If a section comment is defined, close an eventual open frame, add the 
                     # section comment and add an eventually defined arguement comment:
                     lappend DialogBoxArguments -frame ""; # Close an eventual open frame
                     lappend DialogBoxArguments \
                                 -comment [list -text $ProcDef($ProcName,Arg,$Var,SectionComment)]
                     if {[info exists ProcDef($ProcName,Arg,$Var,Comment)]} {
                        lappend DialogBoxArguments \
                                    -comment [list -text $ProcDef($ProcName,Arg,$Var,Comment)]
                     }
                  }
                  # Create a frame around each argument entry in the extended format:
                  lappend DialogBoxArguments -frame [list -label $Var]
               } elseif {[info exists ProcDef($ProcName,Arg,$Var,SectionComment)]} {
                  # If a section is defined, create a section frame in the sort format:
                  lappend DialogBoxArguments \
                              -frame [list -label $ProcDef($ProcName,Arg,$Var,SectionComment)]
               }
               # If an argument comment is defined but not yet applied, apply it: 
               if {[info exists ProcDef($ProcName,Arg,$Var,Comment)] &&
                   !( $ProcDef($ProcName,-interactive_display_format)=="extended" &&
                     [info exists ProcDef($ProcName,Arg,$Var,SectionComment)] )} {
                  lappend DialogBoxArguments \
                              -comment [list -text $ProcDef($ProcName,Arg,$Var,Comment)]
               }

               # Provide to the argument dialogbox all the argument attributes:
               set ArgAttributes {}
               if {$ProcDef($ProcName,Arg,$Var,-type)!=""} {
                  lappend ArgAttributes -type $ProcDef($ProcName,Arg,$Var,-type)
               }
               if {$ProcDef($ProcName,Arg,$Var,-optional)} {
                  lappend ArgAttributes -optional 1
               }
               if {[info exists ProcDef($ProcName,Arg,$Var,-range)] && \
                   $ProcDef($ProcName,Arg,$Var,-range)!=""} {
                  lappend ArgAttributes -range $ProcDef($ProcName,Arg,$Var,-range)
               }
               if {[info exists ProcDef($ProcName,Arg,$Var,-validatecommand)]} {
                  lappend ArgAttributes -validatecommand $ProcDef($ProcName,Arg,$Var,-validatecommand)
               }
               if {[info exists ProcDef($ProcName,Arg,$Var,-validatecommand_error_text)]} {
                  lappend ArgAttributes -validatecommand_error_text $ProcDef($ProcName,Arg,$Var,-validatecommand_error_text)
               }
               if {[info exists ProcDef($ProcName,Arg,$Var,-auxargs)] && $ProcDef($ProcName,Arg,$Var,-auxargs)!=""} {
                  set ArgAttributes [concat $ArgAttributes $ProcDef($ProcName,Arg,$Var,-auxargs)]
               }
               if {[info exists ProcDef($ProcName,Arg,$Var,-auxargs_commands)]} {
                  foreach {AuxArg_Name AuxArgCommand} $ProcDef($ProcName,Arg,$Var,-auxargs_commands) {
                     lappend ArgAttributes $AuxArg_Name [uplevel #1 $AuxArgCommand]
                  }
               }
               if {[info exists ProcDef($ProcName,Arg,$Var,-choicelabels)]} {
                  lappend ArgAttributes -choicelabels $ProcDef($ProcName,Arg,$Var,-choicelabels)
               }

               # Set the default values
               if {[info exists ProcDef($ProcName,Arg,$Var,-default)]} {
                  lappend ArgAttributes -default $ProcDef($ProcName,Arg,$Var,-default)
               }

               # Add the variable name, type, description and range as labels and comments:
               set Label $Var; # Default label
               if {$ProcDef($ProcName,-interactive_display_format)=="extended"} {
                  # Add the argument description as comment
                  if {[info exists ProcDef($ProcName,Arg,$Var,-description)]} {
                     lappend DialogBoxArguments \
                                    -comment [list -text $ProcDef($ProcName,Arg,$Var,-description)]
                  }

                  # Add the type and ranges as comment
                  if {[lsearch {"" "string" "none"} $ProcDef($ProcName,Arg,$Var,-type)]<0} {
                     set Comment "Type: $ProcDef($ProcName,Arg,$Var,-type), "
                     if {[info exists ProcDef($ProcName,Arg,$Var,-range)]} {
                        append Comment "range: [lindex $ProcDef($ProcName,Arg,$Var,-range) 0] .. \
                                                [lindex $ProcDef($ProcName,Arg,$Var,-range) 1], "
                     }
                     lappend DialogBoxArguments -comment [list -text [string range $Comment 0 end-2]]
                  }
               } else {
                  if {[info exists ProcDef($ProcName,Arg,$Var,-description)]} {
                     set Label $ProcDef($ProcName,Arg,$Var,-description)
                  }
               }
               
               # Select the adequate widget for the argument:
               lappend ArgAttributes -label "$Label:" -variable Variable__$Var

               # A specific entry widget is explicitly specified:
               if {[info exists ProcDef($ProcName,Arg,$Var,-widget)]} {
                  lappend DialogBoxArguments -$ProcDef($ProcName,Arg,$Var,-widget) $ArgAttributes

               # A type specific widget exists, so use this one:
               } elseif {[info procs ad_form($ProcDef($ProcName,Arg,$Var,-type))]!=""} {
                  lappend DialogBoxArguments -$ProcDef($ProcName,Arg,$Var,-type) $ArgAttributes

               # Use a simple checkbutton for flags:
               } elseif {$ProcDef($ProcName,Arg,$Var,-type)=="none"} {
                  lappend DialogBoxArguments -checkbutton $ArgAttributes

               # A choice list is provided with less or equal than 4 options, use radioboxes or checkboxes:
               } elseif {[info exists ProcDef($ProcName,Arg,$Var,-choices)] && \
                   [llength $ProcDef($ProcName,Arg,$Var,-choices)]<=4} {
                  if {$ProcDef($ProcName,Arg,$Var,-multiple)} {
                     lappend DialogBoxArguments -checkbox [concat [list \
                                 -choices $ProcDef($ProcName,Arg,$Var,-choices)] $ArgAttributes]
                  } else {
                     lappend DialogBoxArguments -radiobox [concat [list \
                                 -choices $ProcDef($ProcName,Arg,$Var,-choices)] $ArgAttributes]
                  }

               # A choice list is provided with less than 30 options, use a listbox or a disjointlistbox:
               } elseif {[info exists ProcDef($ProcName,Arg,$Var,-choices)] && \
                         [llength $ProcDef($ProcName,Arg,$Var,-choices)]<30} {
                  if {$ProcDef($ProcName,Arg,$Var,-multiple)} {
                     lappend DialogBoxArguments -disjointlistbox [concat [list \
                                 -choicevariable ProcDef($ProcName,Arg,$Var,-choices) -height 3] $ArgAttributes]
                  } else {
                     lappend DialogBoxArguments -listbox [concat [list \
                                 -choicevariable ProcDef($ProcName,Arg,$Var,-choices) -height 3] $ArgAttributes]
                  }

               # For all other cases, use a simple entry widget:
               } else {
                  lappend DialogBoxArguments -entry $ArgAttributes
               }
            }

            # Call the argument dialogbox
            # puts "argument_dialogbox \{$DialogBoxArguments\}"
            if {[argument_dialogbox $DialogBoxArguments]=="cancel"} {
               # The argument dialogbox has been canceled, leave the calling procedure without
               # executing the procedure body:
               ProcedureArgumentEvaluationReturn cancel
            }

            # Set the variables of the optional arguments to the default values, if the variables
            # haven't been defined by the argument dialogbox:
            foreach Var $ProcDef($ProcName,VarList) {
               if {![info exists Variable__$Var] && \
                    [info exists ProcDef($ProcName,Arg,$Var,-default)]} {
                     set Variable__$Var $ProcDef($ProcName,Arg,$Var,-default)
               }
            }

      #### Non interactive call: Parse all arguments and define the argument variables ####

         } else {

            # Result variable declaration and default value definition
            foreach Var $ProcDef($ProcName,VarList) {
               # Declare the result variables. These variables refer to the variables in the parent 
               # procedure (upvar). Attribute to these variables directly the default values that can be 
               # overwritten later with the new defined values.
               upvar $Var Variable__$Var

               # Set the flags to the default values only when the procedure is called interactively:
               if {$ProcDef($ProcName,Arg,$Var,-type)=="none"} {
                  set Variable__$Var 0
               } elseif {[info exists ProcDef($ProcName,Arg,$Var,-default)]} {
                  # Apply an eventually defined default value, in case the argument is not a flag:
                  set Variable__$Var $ProcDef($ProcName,Arg,$Var,-default)
               }
            }

            # Prepare parsing all arguments
            set NbrArgs [llength $args]; # Number of provided arguments
            set NumberUnnamedArgs 0
            set ArgPos 0

            # Parse the unnamed arguments if they are defined first and if some of them have been 
            # declared:
            if {!$ProcDef($ProcName,-named_arguments_first)} {
               # Parse all unnamed arguments. Stop parsing them when:
               # 1) all unnamed arguments that have been declared have been parsed &&
               #    the last unnamed argument has not the -multiple option &&
               # 2) the parsed argument is optional and starts with '-'
               # 3) the parsed argument has can take multiple values &&
               #    one value has already been read &&
               #    the parsed argument starts with '-'
               
               # An argument value is optional when it has been declared with the -optional option
               # or when it is declared with the -multiple option and already one value has been
               # attributed to the argument:
               set IsOptional 0
               
               # Loop through all arguments (only if unnamed arguments have been declared:
               for {} {$ArgPos<[llength $args] && $ProcDef($ProcName,NbrUnnamedVars)>0} {incr ArgPos} {
                  # Get the next provided parameter value:
                  set arg [lindex $args $ArgPos]
                  
                  # The ordered unnamed argument list provides the relevant argument:
                  set Var [lindex $ProcDef($ProcName,UnnamedVarList) $NumberUnnamedArgs]
                  
                  # Stop parsing the unnamed arguments, if the procedure has also named arguments, 
                  # if the argument to parse is optional, and if it starts with '-':
                  if {$ProcDef($ProcName,Arg,$Var,-optional)} {
                     set IsOptional 1
                  }
                  if {$ProcDef($ProcName,NbrNamedVars)>0 && $IsOptional && \
                      [string index $arg 0]=="-"} {
                     break
                  }

                  # If the argument can have multiple values: Don't update the unnamed argument 
                  # counter to attribute the next values to the same argument. Declare the next
                  # values also as optional
                  if {$ProcDef($ProcName,Arg,$Var,-multiple)} {
                     lappend Variable__$Var $arg
                     set IsOptional 1

                  # Otherwise (the argument cannot have multiple values), assign the value to the
                  # variable. Exit the unnamed argument loop when the last declared argument has
                  # been read:
                  } else {
                     set Variable__$Var $arg
                     incr NumberUnnamedArgs
                     if {$NumberUnnamedArgs==$ProcDef($ProcName,NbrUnnamedVars)} {
                        incr ArgPos
                        break
                     }
                  }
               }
               
               # Create an error if there are other argument values that are provided, but when no
               # named arguments are declared:
               if {$ProcDef($ProcName,NbrNamedVars)==0 && $ArgPos<[llength $args]} {
                  ProcedureArgumentEvaluationReturn "$ProcName: Too many arguments: [lrange $args $ArgPos end]"
               }
            }

            # Parse the named arguments
            for {} {$ArgPos<[llength $args]} {incr ArgPos} {
               # Get the argument name:
               set arg [lindex $args $ArgPos]

               # Ignore the '--' flag. Exit the named argument parsing loop if 'named arguments
               # first' is configured
               if {$arg=="--"} {
                  if {$ProcDef($ProcName,-named_arguments_first)} {
                     incr ArgPos
                     break
                  } else {
                     continue
                  }
               }

               # In case the named arguments are used first: Check if the next argument is not 
               # anymore a named argument and stop parsing the named arguments if this is the case.
               if {$ProcDef($ProcName,-named_arguments_first) && [string index $arg 0]!="-"} {
                  break
               }

               # Otherwise (especially if the unnamed arguments are used first), check that the
               # option name starts with '-':
               if {[string index $arg 0]!="-"} {
                  ProcedureArgumentEvaluationReturn "[PureProcName]: Argument '$arg' is not an option"
               }

               # Extract the variable name (eliminate the '-'):
               set Var [string range $arg 1 end]

               # Check if the variable (name) is known. When it is not known, complete it when the 
               # name matches with the begin of a known variable name, or generate otherwise an 
               # error:
               if {![info exists ProcDef($ProcName,Arg,$Var,-type)]} {
                  
                  # Argument completion is disabled - generate an error:
                  if {!$ProcDef($ProcName,-auto_argument_name_completion)} {
                     ProcedureArgumentEvaluationReturn "[PureProcName -appr]: Argument '-$Var' not known"
                  
                  # Argument completion is enabled - check if the variable name corresponds to the
                  # begin of a known argument name:
                  } else {
                     # set MatchingVarList [lsearch -all -inline -glob $ProcDef($ProcName,VarList) ${Var}*] -> Tcl 8.3 doesn't support the -all and -inline switches!
                     set MatchingVarList {}
                     set VarList $ProcDef($ProcName,VarList)
                     while {[set Pos [lsearch -glob $VarList ${Var}*]]>=0} {
                        lappend MatchingVarList [lindex $VarList $Pos]
                        set VarList [lrange $VarList [expr $Pos+1] end]
                     }
                     # Complete the argument name if the argument doesn't exist, but if it is the begin of a declared argument.
                     switch [llength $MatchingVarList] {
                        1 {set Var $MatchingVarList}
                        0 {ProcedureArgumentEvaluationReturn "[PureProcName]: Argument '-$Var' not known"}
                        default {ProcedureArgumentEvaluationReturn "[PureProcName]: Argument '-$Var' may match multiple options: $MatchingVarList"}
                     }
                  }
               }
                  
               # Set the variable value to '1' if the argument is a flag (type=='none'). Read 
               # otherwise the variable value:
               if {$ProcDef($ProcName,Arg,$Var,-type)=="none"} { # The argument is a flag
                  set Value 1
               
               # No argument value is provided - generate an error:
               } elseif {$ArgPos==[llength $args]-1} {
                  ProcedureArgumentEvaluationReturn "[PureProcName]: No value is provided for argument '-$Var'"

               # Read the argument value
               } else {
                  set Value [lindex $args [incr ArgPos]]
               }

               # Define the argument variable. Append the new value to the existing value of the
               # variable, if the '-multiple' attribute is set for the argument:
               if {$ProcDef($ProcName,Arg,$Var,-multiple)} {
                  lappend Variable__$Var $Value
               } else {
                  set Variable__$Var $Value
               }
            }

            # In case the unnamed arguments are defined last, parse them now:
            if {$ProcDef($ProcName,-named_arguments_first)} {
               
               # Loop through the remaining arguments:
               for {} {$ArgPos<[llength $args]} {incr ArgPos} {
                  # Get the next provided parameter value:
                  set arg [lindex $args $ArgPos]
                  # Assure that the number of provided arguments is not exceeding the total number
                  # of declared unnamed arguments:
                  if {$NumberUnnamedArgs>=$ProcDef($ProcName,NbrUnnamedVars)} {
                     # Too many unnamed arguments are used, generate an adequate error message:
                     if {[string index $arg 0]=="-"} {
                        ProcedureArgumentEvaluationReturn "[PureProcName]: Too many unnamed arguments, or incorrectly used named argument: $arg"
                     } else {
                        ProcedureArgumentEvaluationReturn "[PureProcName]: Too many unnamed arguments: $arg"
                     }
                  }
                  
                  # The ordered unnamed argument list provides the relevant argument:
                  set Var [lindex $ProcDef($ProcName,UnnamedVarList) $NumberUnnamedArgs]

                  # Assign all remaining parameter values to the last argument if this one can 
                  # take multiple values:
                  if {$ProcDef($ProcName,Arg,$Var,-multiple) && \
                     $NumberUnnamedArgs==$ProcDef($ProcName,NbrUnnamedVars)-1} {
                     set Variable__$Var [lrange $args $ArgPos end]
                     # incr NumberUnnamedArgs
                     set ArgPos [llength $args]

                  # Assign otherwise the parameter value to the actual argument
                  } else {
                     set Variable__$Var $arg
                     incr NumberUnnamedArgs
                  }
               }
            }
         }

      #### Argument validation ####

         # Check that all mandatory arguments have been defined and that all arguments satisfy the 
         # defined type:

         # Loop through all named and unnamed arguments:
         foreach Var $ProcDef($ProcName,VarList) {
            
            # An error is created when a variable is not optional and when it is not defined:
            if {!$ProcDef($ProcName,Arg,$Var,-optional) && ![info exists Variable__$Var]} {
               ProcedureArgumentEvaluationReturn "[PureProcName]: Required argument is missing: $Var"
            }
            
            # Check the variable value corresponds to the specified type:
            if {[info exists Variable__$Var]} {
               # Transform the variable value in a list in case the argument is not multiple 
               # definable:
               set ValueList [set Variable__$Var]
               if {!$ProcDef($ProcName,Arg,$Var,-multiple)} {
                  set ValueList [list $ValueList]
               }

               # Loop through all elements of this list and check if each element is valid:
               foreach Value $ValueList {
                  # Check the argument type:
                  if {![Validate($ProcDef($ProcName,Arg,$Var,-type)) $Value]} {
                     ProcedureArgumentEvaluationReturn "[PureProcName]: Argument '$Var' requires type '$ProcDef($ProcName,Arg,$Var,-type)'. Provided value: '$Value'"
                  }
               
                  # Check the argument with an eventually defined validation command:
                  if {[info exists ProcDef($ProcName,Arg,$Var,-validatecommand)]} {
                     regsub {%P} $ProcDef($ProcName,Arg,$Var,-validatecommand) $Value ValidateCommand
                     if {![uplevel $ValidateCommand]} {
                        if {[info exists ProcDef($ProcName,Arg,$Var,-validatecommand_error_text)]} {
                           ProcedureArgumentEvaluationReturn "[PureProcName]: $ProcDef($ProcName,Arg,$Var,-validatecommand_error_text)"
                        } else {
                           ProcedureArgumentEvaluationReturn "[PureProcName]: Argument '$Var' is invalid. Provided value: '$Value'. Constraint: '$ProcDef($ProcName,Arg,$Var,-validatecommand)'"
                        }
                     }
                  }

                  # Check if the variable value satisfies an eventually defined range:
                  if {[info exists ProcDef($ProcName,Arg,$Var,-range)]} {
                     if {$Value<[lindex $ProcDef($ProcName,Arg,$Var,-range) 0] || \
                         $Value>[lindex $ProcDef($ProcName,Arg,$Var,-range) 1]} {
                        ProcedureArgumentEvaluationReturn "[PureProcName]: Argument '$Var' has to be between [lindex $ProcDef($ProcName,Arg,$Var,-range) 0] and [lindex $ProcDef($ProcName,Arg,$Var,-range) 1]"
                     }
                  }

                  # Check the variable value is a member of a provided choice list:
                  if {[info exists ProcDef($ProcName,Arg,$Var,-choices)]} {
                     if {[lsearch -exact $ProcDef($ProcName,Arg,$Var,-choices) $Value]<0} {
                        ProcedureArgumentEvaluationReturn "[PureProcName]: Argument '$Var' has to be one of the following elements: [GetChoiceHelpText $ProcName $Var]"
                     }
                  }
               }
            }
         }

      #### Procedure level validation ####

         foreach ValidateCommand $ProcDef($ProcName,-validatecommand) ValidateCommandErrorText $ProcDef($ProcName,-validatecommand_error_text) {
            # regsub {%P} $ProcDef($ProcName,Arg,$Var,-validatecommand) $Value ValidateCommand
            if {![uplevel $ValidateCommand]} {
               if {$ValidateCommandErrorText!=""} {
                  ProcedureArgumentEvaluationReturn "[PureProcName]: $ValidateCommandErrorText"
               } else {
                  ProcedureArgumentEvaluationReturn "[PureProcName]: Invalid argument(s) provided. Constraint: '$ValidateCommand'"
               }
            }
         }

      #### Log the procedure call ####
      
         variable ProcedureCallLogList

         if {$InteractiveCall && $ProcDef($ProcName,-command_log)=="interactive"} {
            append ProcedureCallLogList $ProcName
            if {$ProcDef($ProcName,-named_arguments_first)} {
               set ParClasses {Named Unnamed}
            } else {
               set ParClasses {Unnamed Named}
            }
            foreach ParClass $ParClasses {
               foreach Var $ProcDef($ProcName,${ParClass}VarList) {
                  if {![info exists Variable__$Var]} continue; # Skip optional arguments that haven't been defined
                  if {$ProcDef($ProcName,Arg,$Var,-type)!="none"} { # Non flag arguments
                     if {$ProcDef($ProcName,Arg,$Var,IsNamed)} {
                        append ProcedureCallLogList " -$Var"
                     }
                     append ProcedureCallLogList " \{[set Variable__$Var]\}"
                  } elseif {[set Variable__$Var]} { # Flags that are set
                     append ProcedureCallLogList " -$Var"
                  }
               }
            }
            append ProcedureCallLogList "; \# interactive call\n"
         } elseif {$ProcDef($ProcName,-command_log)=="1"} {
            append ProcedureCallLogList "$ProcedureCallLine\n"
         }
      
      ProcedureArgumentEvaluationReturn ""
   }

   ######## Validation commands ########
   
   # For each of the standard argument types supported by TEPAM, the validation command 
   # 'Validate(<Type>) specified in the following section. These commands have to return '1' in
   # case the provided value correspond to the relevant type and '0' if not. Additional user or
   # application specific types can easily be supported simply by adding a validation command
   # for the new type into the 'tepam' namespace.

   proc Validate()         {v} {return 1}
   proc Validate(none)     {v} {return 1}
   proc Validate(string)   {v} {return 1}
   proc Validate(text)     {v} {return 1}
   proc Validate(boolean)  {v} {string is boolean -strict $v}
   proc Validate(double)   {v} {string is double -strict $v}
   proc Validate(integer)  {v} {string is integer -strict $v}
   proc Validate(alnum)    {v} {string is alnum $v}
   proc Validate(alpha)    {v} {string is alpha $v}
   proc Validate(ascii)    {v} {string is ascii $v}
   proc Validate(control)  {v} {string is control $v}
   proc Validate(digit)    {v} {string is digit $v}
   proc Validate(graph)    {v} {string is graph $v}
   proc Validate(lower)    {v} {string is lower $v}
   proc Validate(print)    {v} {string is print $v}
   proc Validate(punct)    {v} {string is punct $v}
   proc Validate(space)    {v} {string is space $v}
   proc Validate(upper)    {v} {string is upper $v}
   proc Validate(wordchar) {v} {string is wordchar $v}
   proc Validate(xdigit)   {v} {string is xdigit $v}
   proc Validate(char)     {v} {expr [string length $v]==1}
   proc Validate(color)    {v} {expr ![catch {winfo rgb . $v}]}
   proc Validate(font)     {v} {expr ![catch {font measure $v ""}]}
   proc Validate(file)              {v} {expr [string length $v]>0 && ![regexp {[\"*?<>]} $v]}
   proc Validate(existingfile)      {v} {file exists $v}
   proc Validate(directory)         {v} {return 1}
   proc Validate(existingdirectory) {v} {file isdirectory $v}

   ######## Help text generation ########

   # 'ProcedureHelp_Append' appends a piece of text to the existing HelpText variable of the 
   # calling context (procedure). Tabulator characters are replaced through 3 spaces. Lines are 
   # reformatted to respect the maximum allowed line length. In case a line is wrapped, the leading
   # spaces of the first line are added to the begin of the following lines. Multiple lines can be
   # provided as text piece and these multiple lines are handled independently each to another.

   proc ProcedureHelp_Append {Text} {
      upvar HelpText HelpText
      variable help_line_length
      
      # Replace tabs through 3 spaces:
      regsub -all {\t} $Text "   " Text
      
      # Extract the initial spaces of the first line:
      regexp {^(\s*)} $Text {} SpaceStart
      
      # Loop through each of the provided help text line:
      foreach line [split $Text "\n"] {
         
         # Eliminate leading spaces of the line:
         regexp {^\s+'*(.*)$} $line {} line
         
         # Cut the line into segments that doesn't exceed the maximum allowed help line length. 
         # Add in front of each new line the initial spaces of the first line:
         while {$line!=""} {
            # Align the leading line spaces to the first line:
            set line ${SpaceStart}${line}
            
            #### Next line cutoff position evaluation ####

            # Select the next line cut position. The default position is set to the line end:
            set LastPos [string length $line]
            # Search for the last space inside the line section that is inside the specified 
            # maximum line length:
            if {$LastPos>$help_line_length} {
               set LastPos [string last " " $line $help_line_length]
            }
            # If the evaluated line break position is inside the range of the initial line spaces,
            # something goes wrong and the line should be broken at another adequate character:
            if {$LastPos<=[string length $SpaceStart]-1} {
               # Search for other good line break characters (:
               set LastPos [lindex [lindex \
                  [regexp -inline -indices {[^,:\.?\)]+$} \
                  {ProcDef(::ImportTestPointAssignmentsGeneric,Arg_SectionComment,ColumnSeparation}] 0] 0]
               # No line break position could be found:
               if {$LastPos=={}} {set LinePos 0}
            }
            # Break the line simply at the maximum allowed length in case no break position could 
            # be found:
            if {$LastPos<=[string length $SpaceStart]-1} {set LastPos $help_line_length}

            # Add the line segment to the help text:
            append HelpText [string range $line 0 [expr $LastPos-1]]\n
            
            # Eliminate the segment from the actual line:
            set line [string range $line [expr $LastPos+1] end]
         }
      }
   }

   # GetChoiceHelpText returns a help text for the choice options. The returned string corresponds
   # to the comma separated choice list in case no choice labels are defined. Otherwise, the 
   # choice labels are added behind the choice options in paranthesis.
   
   proc GetChoiceHelpText {ProcName Var} {
      variable ProcDef
      set ChoiceHelpText ""
      set LabelList {}
      catch {set LabelList $ProcDef($ProcName,Arg,$Var,-choicelabels)}
      foreach Choice $ProcDef($ProcName,Arg,$Var,-choices) Label $LabelList {
         append ChoiceHelpText ", $Choice"
         if {$Label!=""} {
            append ChoiceHelpText "($Label)"
         }
      }
      return [string range $ChoiceHelpText 2 end]
   }

   # 'ProcedureHelp' behaves in different ways, depending the provided argument. Called without any
   # argument, it summarizes all the declared procedures without explaining details about the 
   # procedure arguments. Called with a particular procedure name as parameter, it produces for
   # this procedure a comprehensive help text. And finally, if it is called with the name of a main 
   # procedure that has multiple sub procedures, it generates for all the sub procedures the 
   # complete help text.

   proc ProcedureHelp {{ProcName ""} {ReturnHelp 0}} {
      variable ProcDef
      variable ProcedureList
      ProcedureHelp_Append "NAME"
      
      # Print a list of available commands when no procedure name has been provided as argument:
      if {$ProcName==""} {
         foreach ProcName [lsort -dictionary $ProcedureList] {
            if {[info exists ProcDef($ProcName,-short_description)]} {
               ProcedureHelp_Append "      [PureProcName] - $ProcDef($ProcName,-short_description)"
            } else {
               ProcedureHelp_Append "      [PureProcName]"
            }
         }

      # A procedure name has been provided, generate a detailed help text for this procedure, or
      # for all sub procedures if only the main procedure names has been provided:
      } else {
         # Create the full qualified procedure name (procedure name including namespace).
         # Check if the procedure name contains already the name space identification:
         if {[string range $ProcName 0 1]!="::"} {
            # The namespace is not part of the used procedure name call. Evaluate it explicitly:
            set NameSpace [uplevel 1 {namespace current}]
            if {$NameSpace!="::"} {append NameSpace "::"}
            set ProcName ${NameSpace}${ProcName}
         }
         set PureProcName [PureProcName]

         # Add the short description if it exists to the NAME help text section. Please note that
         # only the short description of a main procedure is used in case the procedure has also
         # sub procedures.
         if {[info exists ProcDef($ProcName,-short_description)]} {
            ProcedureHelp_Append "      $PureProcName - $ProcDef($ProcName,-short_description)"
         } else {
            ProcedureHelp_Append "      $PureProcName"
         }

         # Create the SYNOPSIS section which contains also the synopsis of eventual sub procedures:
         ProcedureHelp_Append "SYNOPSIS"
         set NbrDescriptions 0
         set NbrExamples 0
         
         # Loop through all procedures and sub procedures:
         set ProcNames [lsort -dictionary [concat [list $ProcName] [info procs "$ProcName *"]]]
         foreach ProcName $ProcNames {
            # Skip the (sub) procedure if it has not been explicitly declared. This may be the 
            # case for procedures that are not implemented themselves but which have sub procedures:
            if {![info exists ProcDef($ProcName,VarList)]} continue
            set PureProcName [PureProcName]

            # Add to the help text first the procedure name, and then in the following lines its
            # arguments:
            ProcedureHelp_Append "      $PureProcName"
            if {$ProcDef($ProcName,-named_arguments_first)} {
               set ParClasses {Named Unnamed}
            } else {
               set ParClasses {Unnamed Named}
            }
            foreach ParClass $ParClasses {
               foreach Var $ProcDef($ProcName,${ParClass}VarList) {
                  # Section comment: Create a clean separation of the arguments:
                  if {[info exists ProcDef($ProcName,Arg,$Var,SectionComment)]} {
                     ProcedureHelp_Append "         --- $ProcDef($ProcName,Arg,$Var,SectionComment) ---"
                  }

                  # Argument declaration - put optional arguments into brackets, show the name
                  # of named arguments, add existing descriptions as well as range, type, choice
                  # definitions:
                  set HelpLine "            "
                  if {$ProcDef($ProcName,Arg,$Var,-optional)} {
                     append HelpLine "\["
                  }
                  if {$ProcDef($ProcName,Arg,$Var,IsNamed)} {
                     append HelpLine "-$Var "
                  }
                  if {$ProcDef($ProcName,Arg,$Var,-type)!="none"} {
                     append HelpLine "<$Var>"
                  }
                  if {$ProcDef($ProcName,Arg,$Var,-optional)} {
                     append HelpLine "\]"
                  }
                  ProcedureHelp_Append $HelpLine

                  set HelpLine "               "
                  if {[info exists ProcDef($ProcName,Arg,$Var,-description)]} {
                     append HelpLine "$ProcDef($ProcName,Arg,$Var,-description), "
                  }
                  if {[lsearch -exact {"" "none"} $ProcDef($ProcName,Arg,$Var,-type)]<0} {
                     append HelpLine "type: $ProcDef($ProcName,Arg,$Var,-type), "
                  }
                  if {[info exists ProcDef($ProcName,Arg,$Var,-default)]} {
                     if {[lsearch -exact {"" "string"} $ProcDef($ProcName,Arg,$Var,-type)]>=0 || $ProcDef($ProcName,Arg,$Var,-default)==""} {
                        append HelpLine "default: \"$ProcDef($ProcName,Arg,$Var,-default)\", "
                     } else {
                        append HelpLine "default: $ProcDef($ProcName,Arg,$Var,-default), "
                     }
                  }
                  if {$ProcDef($ProcName,Arg,$Var,-multiple)} {
                     append HelpLine "multiple: yes, "
                  }
                  if {[info exists ProcDef($ProcName,Arg,$Var,-range)]} {
                     append HelpLine "range: [lindex $ProcDef($ProcName,Arg,$Var,-range) 0]..[lindex $ProcDef($ProcName,Arg,$Var,-range) 1], "
                  }
                  if {[info exists ProcDef($ProcName,Arg,$Var,-choices)]} {
                     append HelpLine "choices: \{[GetChoiceHelpText $ProcName $Var]\}, "
                  }
                  # Eliminate the last ", ":
                  ProcedureHelp_Append [string range $HelpLine 0 end-2]
               }
            }
            # Remember if descriptions and/or examples are provided for the procedure:
            if {[info exists ProcDef($ProcName,-description)]} {
               incr NbrDescriptions
            }
            if {[info exists ProcDef($ProcName,-example)]} {
               incr NbrExamples
            }
         }
         # Add for the procedure and sub procedures the descriptions:
         if {$NbrDescriptions>0} {
            ProcedureHelp_Append "DESCRIPTION"
            foreach ProcName $ProcNames {
               if {[info exists ProcDef($ProcName,-description)]} {
                  if {[llength $ProcNames]>1} {
                     ProcedureHelp_Append "      $PureProcName"
                     ProcedureHelp_Append "         $ProcDef($ProcName,-description)"
                  } else {
                     ProcedureHelp_Append "      $ProcDef($ProcName,-description)"
                  }
               }
            }
         }
         # Add for the procedure and sub procedures the examples:
         if {$NbrExamples>0} {
            ProcedureHelp_Append "EXAMPLE"
            foreach ProcName $ProcNames {
               if {[info exists ProcDef($ProcName,-example)]} {
                  if {[llength $ProcNames]>1} {
                     ProcedureHelp_Append "      $PureProcName"
                     ProcedureHelp_Append "         $ProcDef($ProcName,-example)"
                  } else {
                     ProcedureHelp_Append "      $ProcDef($ProcName,-example)"
                  }
               }
            }
         }
      }
      # The created help text is by default printed to stdout.  The text will be returned
      # as result when 'ReturnHelp' is set to 1:
      if {$ReturnHelp} {
         return $HelpText
      } else {
         puts $HelpText
      }
   }

##########################################################################
#                        argument_dialogbox                            #
##########################################################################

   ######## Argument_dialogbox configuration ########
   
   # Application specific entry widget procedures can use this array variable to store their own 
   # data, using as index the widget path provided to the procedure, e.g. 
   # argument_dialogbox($W,<sub_index>):
   array set argument_dialogbox {}
   
   # Special elements of this array variable can be specified for testing purposes:
   #
   # Set to following variable to "ok" to simulate an acknowledge of the dialog box and to 
   # "cancel" to simulate an activation of the Cancel button:
   set argument_dialogbox(test,status) ""

   # The following variable can contain a script that is executed for test purposes, before
   # the argument dialog box waits on user interactions. The script is executed in the context
   # of the argument dialog box. Entire user interaction actions can be emulated together 
   # with the previous variable.
   set argument_dialogbox(test,script) {}
   
   # The array variable 'last_parameters' is only used by an argument dialog box when its context 
   # has been specified via the -context attribute. The argument dialog box' position and size as 
   # well as its entered data are stored inside this variable when the data are acknowledged and 
   # the form is closed. This allows the form to restore its previous state once it is called 
   # another time.
   array set last_parameters {}
   

   ######## Argument_dialogbox help text ########

   set ArgumentDialogboxHelp {
      argument_dialogbox \
         [-title <DialogBoxTitle>]
         [-window <DialogBoxWindow>]
         [-context <DialogBoxContext>]
         [-validatecommand <Script>]
         [-validatecommand_error_text <Script>]
         <ArgumentDefinition>|<FrameDefinition>|<Comment>
         [<ArgumentDefinition>|<FrameDefinition>|<Separation>|<Comment>]
         [<ArgumentDefinition>|<FrameDefinition>|<Separation>|<Comment>]
         ...

      <FrameDefinition> = -frame <FrameLabel>
      
      <Separation> = -sep {}
      
      <Comment> = -comment {-text <text>}

      <ArgumentDefinition> =
         <ArgumentWidgetType>
         {
            [-variable <variable>]
            [-label <LabelName>]
            [-choices <ChoiceList>]
            [-choicelabels <ChoiceLabelList>]
            [-choicevariable <ChoiceVariable>]
            [-default <DefaultValue>]
            [-multiple_selection 0|1]
            [-height <Height>]
            [-validatecommand <Script>]
            [-validatecommand_error_text <Script>]
            [-validatecommand2 <Script>]
            [-validatecommand2_error_text <Script>]
            [<WidgetTypeParameter1> <WidgetTypeParameterValue1>]
            [<WidgetTypeParameter2> <WidgetTypeParameterValue2>]
            ...
         }
      
      <ParameterWidgetType> = <StandardParameterWidgetType>|<ApplicationSpecificParameterWidgetType>

      <StandardParameterWidgetType> = {
         -entry
         -checkbox -radiobox -checkbutton
         -listbox -disjointlistbox -combobox
         -file -existingfile -directory -existingdirectory
         -color -font
      }
   }

   # Eliminate leading tabs in the help text and replace eventual tabs through spaces
   regsub -all -line {^\t\t} $ArgumentDialogboxHelp "" ArgumentDialogboxHelp
   regsub -all -line {\t} $ArgumentDialogboxHelp "   " ArgumentDialogboxHelp

   ######## argument_dialogbox ########

   # The argument dialog box allows a very easy generation of complex dialog boxes that can be 
   # used for tool configuration purposes or to control actions.
   # The argument dialog box accepts only named arguments, e.g. all arguments have to be defined 
   # as argument pairs (-<ArgumentName> <ArgumentValue>). There are some view arguments like -title,
   # -windows and -context that effect the argument dialog box' general attitude and embedding. The
   # remaining argument block's objective is the definition of variables. Except the two arguments 
   # -frame and -sep that are used to structure graphically the form, all other arguments have to
   # be assigned either to a local or global variable. The argument dialog box will create in the
   # procedure from which it has been called a local variable, unless the variable has not been 
   # defined explicitly as global variable, or as part of a certain namespace.
   # The argument dialog box requires for each variable that has to be controlled a separate 
   # parameter pair. The first element is indicating the entry form that will be used to control 
   # the variable, the second element provides information concerning the variable that has to be
   # defined and about its validation as well as parameters for the entry form. TEPAM provides
   # already a lot of available entry forms, but other application specific forms can easily been
   # added if necessary.
   # The following lines show an example of the way how the argument dialog box is used:
   #
   #   argument_dialogbox \
   #      -title "System configuration" \
   #      -window .dialog_box \
   #      -context test_1 \
   #      \
   #      -frame {-label "File definitions"} \
   #         -comment {-text "Here are two entry fields"} \
   #         -file {-variable InputFile} \
   #         -file {-label "Output file" -variable OutputFile} \
   #      -frame {-label "Frame2"} \
   #         -entry {-label Offset -variable OffsetValue} \
   #         -sep {} \
   #         -listbox {-label MyListBox -variable O(-lb1) -choices {1 2 3 4 5 6 7 8} -choicevariable ::O(-lb1_contents) -multiple_selection 1} \
   #      -frame {-label "Check and radio boxes"} \
   #         -checkbox {-label MyCheckBox -variable O(-check1) -choices {bold italic underline} -choicelabels {Bold Italic Underline}} \
   #         -radiobox {-label MyRadioBox -variable O(-radio1) -choices {bold italic underline} -choicelabels {Bold Italic Underline}} \
   #         -checkbutton {-label MyCheckButton -variable O(-check2)} \
   #      -frame {-label "Others"} \
   #         -color {-label "Background color" -variable MyColor} \

   proc argument_dialogbox {args} {
      variable argument_dialogbox
      variable ArgumentDialogboxHelp
      variable last_parameters
      # Call an initialization command that generates eventual required images:
      GuiEnvironmentInit

      #### Basic parameter check ####

         # Use the args' first element as args list if args contains only one element:
         if {[llength $args]==1} {
            set args [lindex $args 0]
         }
         # Check if arguments are provided and if the number of arguments is even:
         if {[llength $args]<1} {
            return -code error "argument_dialogbox: no argument is provided"
         }
         if {[llength $args]%2!=0 && $args!="-help"} {
            return -code error "argument_dialogbox: arguments have to be provided in key/value pairs"
         }

      #### Global parameter evaluation and top-level window creation ####

         # The following default widget path can be changed with the -window argument:
         set Wtop .dialog
         
         # Initialize the global parameters
         # YScroll=auto: Scroll is enabled in function of the windows and screen size
         array set ProcOption {
            -validatecommand {} -validatecommand2 {}
            -validatecommand_error_text {} -validatecommand2_error_text {}
            -parent .
            -title "Dialog"
            -yscroll "auto"
         }

         # Read the global parameters by looping through all arguments to select the relevant 
         # ones:
         foreach {ArgName ArgValue} $args {
            switch -- $ArgName {
               -help {puts $ArgumentDialogboxHelp; return}
               -window {set Wtop $ArgValue}
               -parent -
               -context -
               -title -
               -yscroll -
               -validatecommand -
               -validatecommand2 -
               -validatecommand_error_text -
               -validatecommand2_error_text {
                  lappend ProcOption($ArgName) $ArgValue
               }
            }
         }

         # Create the dialog box' top-level window. Hide it until the windows has been entirely 
         # deployed:
         catch {destroy $Wtop}
         toplevel $Wtop
         wm withdraw $Wtop
         wm title $Wtop $ProcOption(-title)
         wm transient $Wtop $ProcOption(-parent)

         grid [frame $Wtop.sf] -row 0 -column 0 -sticky news
         grid columnconfigure $Wtop 0 -weight 1
         grid rowconfigure $Wtop 0 -weight 1
         frame $Wtop.sf.f
         
         # Delete eventually variables defined by a previous call of the argument dialog box:
         catch {array unset argument_dialogbox $Wtop,*}
         catch {array unset argument_dialogbox $Wtop.*}

      #### Argument dependent dialog box generation ####

         # Loop through all arguments and build the dialog box:
         set ArgNbr -1
         set Framed 0
         set W $Wtop.sf.f
         foreach {ArgName ArgValue} $args {
            incr ArgNbr
            
            # Check that the argument is a named argument:
            if {[string index $ArgName 0]!="-"} {
               return -code error "Argument $ArgName not known"
            }

            # Skip the global parameters that have already been processed
            if {[lsearch -exact {-window -parent -context -title -help -yscroll
                                 -validatecommand -validatecommand2
                                 -validatecommand_error_text -validatecommand2_error_text} $ArgName]>=0} continue
            
            # Define the widget path for the new argument:
            set WChild($ArgNbr) $W.child_$ArgNbr
            
            # An argument option array will be created, based on the argument value list:
            if {$ArgName!="-sep"} {
               catch  {unset Option}
               array set Option {-label "" -optional 0}
               if {[llength $ArgValue]%2!=0} {
                  return -code error "argument_dialogbox, argument $ArgName: Attribute definition list has to contain an even number of elements"
               }
               array set Option $ArgValue
            }
            
            # The leading '-' of the argument name will not be used anymore in the remaining code:
            set ElementType [string range $ArgName 1 end]
            switch -- $ElementType {
               frame {
                  # Handle frames - close an eventual already open frame first:
                  if {$Framed} {
                     set W [winfo parent [winfo parent $W]]
                     set WChild($ArgNbr) $W.child_$ArgNbr
                  }
                  set Framed 0
                  
                  # Create only a new frame when the provided argument list is not empty:
                  if {$ArgValue!=""} {
                     # Create a labeled frame (for Tk 8.3 that doesn't contain a label frame)
                     set FontSize 10
                     pack [frame $WChild($ArgNbr) -bd 0] \
                        -pady [expr $FontSize/2] -padx 2 -fill both -expand no
                     pack [frame $WChild($ArgNbr).f -bd 2 -relief groove] \
                        -pady [expr $FontSize/2] -fill both -expand no
                     place [label $WChild($ArgNbr).label -text $Option(-label)] \
                        -x $FontSize -y [expr $FontSize/2] -anchor w
                     pack [canvas $WChild($ArgNbr).f.space -height [expr $FontSize/4] -width 10] \
                        -pady 0
                     set W $WChild($ArgNbr).f
                     set Framed 1
                  }
               }

               sep {
                  # A separator is nothing else than a frame widget that has 'no height' and a 
                  # relief structure:
                  pack [frame $WChild($ArgNbr) -height 2 -borderwidth 1 -relief sunken] \
                     -fill x -expand no -pady 4
               }

               comment {
                  # A simple label widget is used for comments:
                  pack [label $WChild($ArgNbr) -text $Option(-text) -fg blue -justify left] \
                     -anchor w -expand no -pady 2
               }
               
               default {
                  # All other arguments, e.g. the real entries to define the variables, are 
                  # handled by procedures that provides sub commands for the different usages:
                  #   ad_form(<EntryType>) create - creates the entry widget
                  #   ad_form(<EntryType>) set_choice - set the choice constraints
                  #   ad_form(<EntryType>) set - set the default value
                  #   ad_form(<EntryType>) get - read the defined value

                  # Create a text in front of the entry widget if the -text attribute is defined:
                  if {[info exists Option(-text)]} {
                     pack [label $WChild($ArgNbr)_txt -text $Option(-text) -fg blue \
                        -justify left] -anchor w -expand no -pady 2
                  }

                  # Create for the entry a frame and place the label together with a sub frame
                  # into it:
                  pack [frame $WChild($ArgNbr)] -fill x -expand yes
                  pack [label $WChild($ArgNbr).label -text $Option(-label)] -pady 4 -side left
                  pack [frame $WChild($ArgNbr).f] -fill x -expand yes -side left
                              
                  # Delete eventual existing array members related to the new entry:
                  array unset argument_dialogbox $WChild($ArgNbr),*
                  
                  # Create the variable entry form:
                  ad_form($ElementType) $WChild($ArgNbr).f create
                  
                  # Attribute if existing the choice list. This list can either be provided via 
                  # the -choicevariable or via -choices:
                  if {[info exists Option(-choicevariable)] && \
                      [uplevel 1 "info exists \"$Option(-choicevariable)\""]} {
                     ad_form($ElementType) $WChild($ArgNbr).f set_choice \
                           [uplevel 1 "set \"$Option(-choicevariable)\""]
                  } elseif {[info exists Option(-choices)]} {
                     ad_form($ElementType) $WChild($ArgNbr).f set_choice $Option(-choices)
                  }
                  
                  # Apply the default value. If the variable exists already, use the variable value
                  # as default value. Otherwise, check if the last_parameter array provides the
                  # value from a previous usage. And finally, check if a default value is provided
                  # via the -default option:
                  if {[info exists Option(-variable)] && \
                      [uplevel 1 "info exists \"$Option(-variable)\""]} {
                     ad_form($ElementType) $WChild($ArgNbr).f set \
                           [uplevel 1 "set \"$Option(-variable)\""]
                  } elseif {[info exists Option(-variable)] && [info exists ProcOption(-context)] && \
                            [info exists last_parameters($ProcOption(-context),$Option(-variable))]} {
                     ad_form($ElementType) $WChild($ArgNbr).f set \
                              $last_parameters($ProcOption(-context),$Option(-variable))
                  } elseif {[info exists Option(-default)]} {
                     ad_form($ElementType) $WChild($ArgNbr).f set $Option(-default)
                  }
                  
                  # Check if the 'Validate' command is defined for the provided variable type:
                  if {[info exists Option(-type)] && [catch {Validate($Option(-type)) ""}]} {
                     return -code error "Argument_dialogbox: Argument type '$Option(-default)' not known"
                  }
               }
            }
         }

      #### Dialog box finalization ####

         # Add the OK and cancel buttons, restore eventually saved geometry data and deiconify finally 
         # the form:
         grid [frame $Wtop.buttons] -row 1 -column 0 -columnspan 2 -sticky ew
         button $Wtop.buttons.ok -text OK -command "set ::tepam::argument_dialogbox($Wtop,status) ok"
         button $Wtop.buttons.cancel -text Cancel -command "set ::tepam::argument_dialogbox($Wtop,status) cancel"
         pack $Wtop.buttons.ok $Wtop.buttons.cancel -side left -fill x -expand yes

         update
         if {$ProcOption(-yscroll)==1 || ($ProcOption(-yscroll)=="auto" && 
                [winfo reqheight $Wtop.sf.f]+[winfo reqheight $Wtop]>[winfo screenheight $Wtop]*2/3)} {
            place $Wtop.sf.f -x 0 -y 0 -relwidth 1; # -relheight 1
            grid [scrollbar $Wtop.scale -orient v -command "tepam::argument_dialogbox_scroll $Wtop"] -row 0 -column 1 -sticky ns

            wm geometry $Wtop [winfo reqwidth $Wtop.sf.f]x[expr [winfo screenheight $Wtop.sf.f]*2/3]
            update
            tepam::argument_dialogbox_scroll $Wtop init

            # Add the bindings
            bind $Wtop.sf <Configure> "tepam::argument_dialogbox_scroll $Wtop config %W %w %h"
            bind $Wtop <MouseWheel> "if {%D>0} {tepam::argument_dialogbox_scroll $Wtop scroll -1 units} elseif {%D<0} {tepam::argument_dialogbox_scroll $Wtop scroll 1 units}"
            bind $Wtop <Button-4> "tepam::argument_dialogbox_scroll $Wtop scroll -1 units"
            bind $Wtop <Button-5> "tepam::argument_dialogbox_scroll $Wtop scroll 1 units"
         } else {
            pack $Wtop.sf.f -expand yes -fill both
         }

         if {[info exists ProcOption(-context)] && [info exists last_parameters($ProcOption(-context),-geometry)]} {
            ConfigureWindowsGeometry $Wtop $last_parameters($ProcOption(-context),-geometry)
         }

         wm protocol $Wtop WM_DELETE_WINDOW "set ::tepam::argument_dialogbox($Wtop,status) cancel"

         wm deiconify $Wtop

      #### Wait until the dialog box's entries are acknowleged (OK button) or discarded #
      
         # Execute a script if required (only for testing purposes)
         if {$argument_dialogbox(test,script)!={}} {
            eval $argument_dialogbox(test,script)
         }
      
         # Stay in a loop until all the provided values have been validated:
         while {1} {
            # Wait until the OK or cancel button is pressed:
            set argument_dialogbox($Wtop,status) ""
            if {$argument_dialogbox(test,status)==""} {
               vwait ::tepam::argument_dialogbox($Wtop,status)
               set status $argument_dialogbox($Wtop,status)
            } else { # Emulate the button activation for test purposes
               set status $argument_dialogbox(test,status)
            }

            # Cancel has been pressed - exit the wait loop:
            if {$status=="cancel"} break

            # Read all the provided values, validate them, and assign them the corresponding 
            # variables:
            set ErrorMessage ""
            set ArgNbr -1
            foreach {ArgName ArgValue} $args {
               incr ArgNbr
               
               # Extract the element type (eliminate the leading '-') and the parameters to the
               # Option array:
               set ElementType [string range $ArgName 1 end]
               if {[llength $ArgValue]<2 || [llength $ArgValue]%2!=0} continue
               catch  {unset Option}
               array set Option {-label "" -optional 0}
               array set Option $ArgValue
                # No variable is assigned to the entry, so skip this parameter:
               if {![info exists Option(-variable)]} continue
   
               # Read the result, check it and assign the result variable
               set Value [ad_form($ElementType) $WChild($ArgNbr).f get]
   
               # Validate the provided data:
               if {$Value!="" || $Option(-optional)==0} {
                  if {[info exists Option(-type)] && ![Validate($Option(-type)) $Value]} {
                     append ErrorMessage "$Option(-variable): Required type is $Option(-type)\n"
                  }
                  # Apply the validate command if existing:
                  if {[info exists Option(-validatecommand)]} {
                     regsub {%P} $Option(-validatecommand) $Value ValidateCommand
                     if {![uplevel $ValidateCommand]} {
                        if {[info exists Option(-validatecommand_error_text)]} {
                           append ErrorMessage "$Option(-validatecommand_error_text)\n"
                        } else {
                           append ErrorMessage "$Option(-variable): The value '$Value' is not valid\n"
                        }
                     }
                  }
                  # Check against a provided range:
                  if {[info exists Option(-range)]} {
                     if {$Value<[lindex $Option(-range) 0] || \
                         $Value>[lindex $Option(-range) 1]} {
                        append ErrorMessage "$Option(-variable): The value has to be between [lindex $Option(-range) 0] and [lindex $Option(-range) 1]\n"
                     }
                  }
                  # Check that the variable value is a member of a provided choice list. Some 
                  # flexibility is required for this check, since the specified value may be a list 
                  # of multiple elements that are matching the choice list.
                  if {[info exists Option(-choices)]} {
                     set ChoiceError 0
                     foreach v $Value {
                        if {[lsearch -exact $Option(-choices) $v]<0} {
                        incr ChoiceError
                        }
                     }
                     if {$ChoiceError && [lsearch -exact $Option(-choices) $Value]<0} {
                        append ErrorMessage "$Option(-variable): The value(s) has(have) to be one of the following elements: $Option(-choices)\n"
                     }
                  }
               }
               if {[info exists ProcOption(-context)]} {
                  set last_parameters($ProcOption(-context),$Option(-variable)) $Value
               }
            }

            if {$ErrorMessage==""} {
               #### Assign the values to the variables ####
               set ArgNbr -1
               foreach {ArgName ArgValue} $args {
                  incr ArgNbr
                  # Extract the element type (eliminate the leading '-') and the parameters to the
                  # Option array:
                  set ElementType [string range $ArgName 1 end]
                  if {[llength $ArgValue]<2 || [llength $ArgValue]%2!=0} continue
                  catch  {unset Option}
                  array set Option {-label "" -optional 0}
                  array set Option $ArgValue
                   # No variable is assigned to the entry, so skip this parameter:
                  if {![info exists Option(-variable)]} continue
   
                  # Read the result, check it and assign the result variable
                  set Value [ad_form($ElementType) $WChild($ArgNbr).f get]
   
                  # Define the variable in the context of the calling procedure:
                  if {$Value!="" || $Option(-optional)==0} {
                     uplevel 1 "set \"$Option(-variable)\" \{$Value\}"
                  }
               }

               #### Perform the custom argument validations ####
               
               foreach {VCommandO VCommandErrTxtO VLevel} {
                  -validatecommand -validatecommand_error_text 1
                  -validatecommand2 -validatecommand2_error_text 2
               } {
                  foreach ValidateCommand $ProcOption($VCommandO) ValidateCommandErrTxt $ProcOption($VCommandErrTxtO) {
                     if {![uplevel $VLevel $ValidateCommand]} {
                        if {$ValidateCommandErrTxt!=""} {
                           append ErrorMessage "$ValidateCommandErrTxt\n"
                        } else {
                           append ErrorMessage "Validation constraint '$ArgValue' is not satisfied\n"
                        }
                     }
                  }
               }
            }

            # Exit the loop if everything could be validated
            if {$ErrorMessage==""} break

            # Generate otherwise an error message box
            if {$argument_dialogbox(test,status)==""} {
               tk_messageBox -icon error -title Error -type ok -parent $Wtop \
                             -message "The entries could not be successfully validated:\n\n$ErrorMessage\nPlease correct the related entries."
               raise $Wtop
            } else { # Return the error message as error for test purposes
               return -code error "The entries could not be successfully validated:\n\n$ErrorMessage\nPlease correct the related entries."
            }
         }
         
         #### Save the dialog box' geometry and destroy the form ####

         if {[info exists ProcOption(-context)]} {
            set last_parameters($ProcOption(-context),-geometry) [wm geometry $Wtop]
         }
         destroy $Wtop
         array unset argument_dialogbox $Wtop,*
         return $status
   }

   # The procedure 'argument_dialogbox_scroll' is used by the argument dialogbox' y-scrollbar to
   # execute the scroll commands. It implements the Tk typical scroll commands like 'moveto', 
   # 'scroll x pages/units'. In addition to this it implements also an initialization (used to
   # initialize the scrolled frame) and a configuragion command that can be executed when a 
   # configuration event happens.
   proc argument_dialogbox_scroll {Wtop Command args} {
      set FrameHeight [winfo reqheight $Wtop.sf.f]
      set VisibleHeight [expr 1.0*[winfo height $Wtop.sf]/$FrameHeight]
      set ActualPositionY [lindex [$Wtop.scale get] 0]

      switch -- $Command {
         init {
            set ::tepam::argument_dialogbox($Wtop,wsize) ""
         }
         config {
            if {[lindex $args 0]!="$Wtop.sf" || $args==$::tepam::argument_dialogbox($Wtop,wsize)} return
            set ::tepam::argument_dialogbox($Wtop,wsize) $args
            argument_dialogbox_scroll $Wtop moveto 0
         }
         moveto {
            # Get the desired scroll position, and keep it within the valid scroll range
            set NewPositionY [lindex $args 0]
            if {$NewPositionY<0} {set NewPositionY 0}
            if {$NewPositionY>1.0-$VisibleHeight} {set NewPositionY [expr 1.0-$VisibleHeight]}

            # Adjust the scrollable frame location
            place configure $Wtop.sf.f -y [expr -1.0*$NewPositionY*$FrameHeight]

            # Adjust the scrollbar status
            $Wtop.scale set $NewPositionY [expr $NewPositionY+$VisibleHeight]
         }
         scroll {
            set StepH [expr 30.0/$FrameHeight]; # This defines the scroll unit
            switch -- $args {
               "-1 pages" {
                  argument_dialogbox_scroll $Wtop moveto [expr $ActualPositionY-$VisibleHeight]
               }
               "1 pages" {
                  argument_dialogbox_scroll $Wtop moveto [expr $ActualPositionY+$VisibleHeight]
               }
               "-1 units" {
                  argument_dialogbox_scroll $Wtop moveto [expr $ActualPositionY-$StepH]
               }
               "1 units" {
                  argument_dialogbox_scroll $Wtop moveto [expr $ActualPositionY+$StepH]
               }
            }
         }
      }
   }

   # Create the necessary resources when the argument dialog box is called the first time:
   proc GuiEnvironmentInit {} {
      if {[lsearch [image names] Tepam_SmallFlashDown]>=0} return
      image create bitmap Tepam_SmallFlashDown -data {#define down_width 8
         #define down_height 8
         static unsigned char down_bits[] = {
            0x00 0x00 0xff 0x7e 0x3c 0x18 0x00 0x00 }; }
   }

   # The following procedure defines the geometry (WxH+-X+-Y) of a window. The geometry is provided as
   # second parameter. The position (X/Y) are verified and corrected if necessary to make the window
   # entirly visible on the screen.
   # This position correction is particularly interesting if an application runs within the same user 
   # environment, but with different screen configurations.
   proc ConfigureWindowsGeometry {W Geometry} {
      set Width 200
      set Height 150
      regexp {^(\d+)x(\d+)} $Geometry {} Width Height

      set X ""
      set Y ""
      if {[regexp {([+-]+\d+)([+-]+\d+)$} $Geometry {} X Y]} {
         if {$X<0} {set X +0}
         # if {$X>[winfo screenwidth .]-[winfo reqwidth $W]} {set X +[expr [winfo screenwidth .]-[winfo reqwidth $W]]}
         if {$X>[winfo screenwidth .]-$Width} {set X +[expr [winfo screenwidth .]-$Width]}

         if {$Y<0} {set Y +0}
         # if {$Y>[winfo screenheight .]-[winfo reqheight $W]} {set Y +[expr [winfo screenheight .]-[winfo reqheight $W]]}
         if {$Y>[winfo screenheight .]-$Height} {set Y +[expr [winfo screenheight .]-$Height]}
      }
      
      wm geometry $W ${Width}x${Height}${X}${Y}
   }

   ######## Standard entry forms for the argument_dialogbox ########

   # A dedicated procedure that handles the geometrical aspects of the argument dialog box is 
   # required for each argument type. The prototype header of such a procedure is:
   #
   #    proc ad_form(<EntryType>) {W Command {Par ""}} <Body>
   #
   # The argument 'W' provides the path into which the entry has to be embedded.
   # The procedures have to provide several sub command. The optional argument 'Par' is only used 
   # for the 'set' and 'set_choice' sub commands:
   #
   #    ad_form(<EntryType>) <W> create
   #       This sub command has to creates the form for the given entry type.
   #
   #    ad_form(<EntryType>) <W> set_choice <ChoiceList>
   #       This sub command has to define the available selections (choice lists).
   #
   #    ad_form(<EntryType>) <W> set <Value>
   #       This sub command has to set the default value of the form.
   #
   #    ad_form(<EntryType>) <W> get
   #       This sub command has to return the value defined inside the form.
   #
   # To support all these sub commands, the procedures are typically structured in the following
   # way:
   #
   #    proc ad_form(<EntryType>) {W Command {Par ""}} {
   #       upvar Option Option
   #       switch $Command {
   #          "create" {<Form creation script>}
   #          "set" {<Default value setting script>}
   #          "set_choice" {<Choice list definition script>}
   #          "get" {return [<Value evaluation script>]}
   #       }
   #    }
   #
   # The parameter definition list is mapped to the Option array variable when the ad_form
   # procedures are called. These procedures can access these parameters via the Option variable
   # of the calling procedure using the upvar statement.
   # The provided frame into which each ad_form procedure can deploy the argument definition entry
   # is by default not expandable. To make them expandable, for example for list boxes, the
   # procedure ad_form(make_expandable) has to be called providing it with the entry path:

   proc ad_form(make_expandable) {W} {
      upvar 2 Framed Framed  FontSize FontSize
      # Override the not expanded parent frames:
      pack $W -fill both -expand yes
      pack [winfo parent $W] -fill both -expand yes
      if {$Framed} {
         # Make the parent frames expandable for that the listbox can also expand
         pack [winfo parent [winfo parent [winfo parent $W]]] \
            -pady [expr $FontSize/2] -fill both -expand yes
         pack [winfo parent [winfo parent $W]] \
            -pady [expr $FontSize/2] -fill both -expand yes
      }
   }

   # Implement now all entries:

   #### Simple text entry ####

   proc ad_form(entry) {W Command {Par ""}} {
      switch $Command {
         "create" {
            pack [entry $W.entry] -fill x -expand yes -pady 4 -side left }
         "set" {
            $W.entry delete 0 end; # Clear the existing selection in case the 'set' command is called multiple times
            $W.entry insert 0 $Par
         }
         "get" {
            return [$W.entry get]
         }
      }
   }

   #### Text (multi line text) ####

   proc ad_form(text) {W Command {Par ""}} {
      # puts "ad_form(text) $W $Command $Par"
      upvar Option Option
      switch $Command {
         "create" {
            ad_form(make_expandable) $W
            grid [text $W.text -yscrollcommand "$W.yscrollbar set"] -column 0 -row 0 -pady 2 -sticky news
            grid [scrollbar $W.yscrollbar -command "$W.text yview"] -column 1 -row 0 -pady 2 -sticky ns

            # Add a horizontal scroll bar if wrapping is disabled
            if {[info exists Option(-wrap)] && $Option(-wrap)=="none"} {
               grid [scrollbar $W.xscrollbar -command "$W.text xview" -orient horizontal] -column 0 -row 1 -sticky ew
               $W.text config -xscrollcommand "$W.xscrollbar set"
            }
            grid columnconfigure $W 0 -weight 1
            grid rowconfigure $W 0 -weight 1
            
            # Apply the text widget parameters
            $W.text config -wrap word -height 4; # Default parameters
            foreach Par {-height -wrap} {
               if {[info exists Option($Par)]} {
                  $W.text config $Par $Option($Par)
               }
            }
         }
         "set" {
            $W.text delete 0.0 end; # Clear the existing selection in case the 'set' command is called multiple times
            $W.text insert 0.0 $Par
         }
         "get" {
            return [$W.text get 0.0 "end - 1 chars"]
         }
      }
   }

   #### Color entry ####

   # Select_color sets the text and color of the color entry to a new color: 
   proc select_color {W NewColor} {
      if {$NewColor!=""} {
         $W.entry delete 0 end
         $W.entry insert 0 $NewColor
      }
      $W.entry config -background gray80
      catch {$W.entry config -background [$W.entry get]}
   }

   proc ad_form(color) {W Command {Par ""}} {
      upvar Option Option
      if {![info exists Option(-type)]} {
         set Option(-type) color
      }
      set Title ""
      catch {set Title $Option(-label)}
      switch $Command {
         "create" {
            pack [entry $W.entry] -fill x -expand yes -pady 4 -side left
            pack [button $W.button -text Choose -command "::tepam::select_color $W \[tk_chooseColor -parent \{$W\} -title \{$Title\}\]"] -pady 4 -side left
            bind $W.entry <Key-Return> "tepam::select_color $W {}"
            bind $W.entry <Leave> "tepam::select_color $W {}"
         }
         "set" {
            select_color $W $Par
         }
         "get" {
            return [$W.entry get]
         }
      }
   }

   #### File and directory entries ####

   # Select_file sets the file or directory entry to a new file name:
   proc select_file {W NewFile} {
      if {$NewFile==""} return
      $W.entry delete 0 end
      $W.entry insert 0 $NewFile
   }

   # Ad_form(directory_or_file) is a generic implementation of a file and directory selection
   # form. It will be used for the different file and directory types:
   proc ad_form(directory_or_file) {W Type Command {Par ""}} {
      upvar 2 Option Option
      if {![info exists Option(-type)]} {
         set Option(-type) $Type
      }
      set Title ""
      catch {set Title $Option(-label)}
      switch $Command {
         "create" {
            set FileTypes {}
            if {[info exists Option(-filetypes)]} {
               set FileTypes $Option(-filetypes)
            }

            set ActiveDir "\[file dirname \[$W.entry get\]\]";
            if {[info exists Option(-activedir)]} {
               set ActiveDir $Option(-activedir)
            }

            set InitialFile "\[$W.entry get\]";
            if {[info exists Option(-initialfile)]} {
               set InitialFile $Option(-initialfile)
               set ActiveDir [file dirname $Option(-initialfile)]
            }

            pack [entry $W.entry] -fill x -expand yes -pady 4 -side left
            if {$Type=="existingdirectory"} {
               pack [button $W.button -text Browse -command "::tepam::select_file $W \[tk_chooseDirectory -parent $W                         -initialdir \"$ActiveDir\"                               -title \{$Title\}\]"] -pady 4 -side left
            } elseif {$Type=="directory"} {
               pack [button $W.button -text Browse -command "::tepam::select_file $W \[tk_chooseDirectory -parent $W                         -initialdir \"$ActiveDir\"                               -title \{$Title\}\]"] -pady 4 -side left
            } elseif {$Type=="existingfile"} {
               pack [button $W.button -text Browse -command "::tepam::select_file $W \[tk_getOpenFile   -parent $W -filetypes \{$FileTypes\} -initialdir \"$ActiveDir\" -initialfile \"$InitialFile\" -title \{$Title\}\]"] -pady 4 -side left
            } else { # file
               pack [button $W.button -text Browse -command "::tepam::select_file $W \[tk_getSaveFile  -parent $W -filetypes \{$FileTypes\} -initialdir \"$ActiveDir\" -initialfile \"$InitialFile\" -title \{$Title\}\]"] -pady 4 -side left
            }
         }
         "set" {
            $W.entry delete 0 end; # Clear the existing selection in case the 'set' command is called multiple times
            $W.entry insert 0 $Par
         }
         "get" {
            return [$W.entry get]
         }
      }
   }

   # The generic file and directory selection command 'ad_form(directory_or_file)' are used to
   # implement the 4 file and directory selection forms:

   proc ad_form(directory) {W Command {Par ""}} {
      ad_form(directory_or_file) $W directory $Command $Par
   }

   proc ad_form(existingdirectory) {W Command {Par ""}} {
      ad_form(directory_or_file) $W existingdirectory $Command $Par
   }

   proc ad_form(file) {W Command {Par ""}} {
      ad_form(directory_or_file) $W file $Command $Par
   }

   proc ad_form(existingfile) {W Command {Par ""}} {
      ad_form(directory_or_file) $W existingfile $Command $Par
   }

   #### Combobox ####

   proc ad_form(combobox) {W Command {Par ""}} {
      switch $Command {
         "create" {
            pack [entry $W.entry -borderwidth 2] -fill x -expand yes -pady 4 -side left
               pack [button $W.button -relief flat -borderwidth 0 -image Tepam_SmallFlashDown -command "tepam::ad_form(combobox) $W open_selection"] -pady 4 -side left

               toplevel $W.selection -border 1 -background black
               wm overrideredirect $W.selection 1
               wm withdraw $W.selection
            pack [listbox $W.selection.listbox -yscrollcommand "$W.selection.scrollbar set" -exportselection 0] -fill both -expand yes -side left
            pack [scrollbar $W.selection.scrollbar -command "$W.selection.listbox yview"] -fill y -side left -expand no
                     
            bind $W.selection.listbox <<ListboxSelect>> "tepam::ad_form(combobox) $W close_selection"
            bind $W.selection <FocusOut> "wm withdraw $W.selection"
         }
         "set" {
            $W.entry delete 0 end; # Clear the existing selection in case the 'set' command is called multiple times
            $W.entry insert 0 $Par
         }
         "get" {
            return [$W.entry get]
         }
         "set_choice" {
            foreach v $Par {
               $W.selection.listbox insert end $v
            }
         }
         "open_selection" {
            ConfigureWindowsGeometry $W.selection [expr [winfo width $W.entry]+[winfo width $W.button]]x100+[winfo rootx $W.entry]+[expr [winfo rooty $W.entry]+[winfo height $W.entry]]

            catch {$W.selection.listbox selection clear 0 end}
            catch {$W.selection.listbox selection set [lsearch -exact [$W.selection.listbox get 0 end] [$W.entry get]]}
            catch {$W.selection.listbox yview [lsearch -exact [$W.selection.listbox get 0 end] [$W.entry get]]}
            
            wm deiconify $W.selection
            focus $W.selection }
         "close_selection" {
            $W.entry delete 0 end
            $W.entry insert 0 [$W.selection.listbox get [$W.selection.listbox curselection]]
            wm withdraw $W.selection }
      }
   }

   #### Listbox ####

   proc ad_form(listbox) {W Command {Par ""}} {
      # puts "ad_form(listbox) $W $Command $Par"
      upvar Option Option
      switch $Command {
         "create" {
            ad_form(make_expandable) $W
            pack [listbox $W.listbox -yscrollcommand "$W.scrollbar set" -exportselection 0] -fill both -expand yes -pady 4 -side left
            if {[info exists Option(-multiple_selection)] && $Option(-multiple_selection)} {
               $W.listbox config -selectmode extended
            }
            pack [scrollbar $W.scrollbar -command "$W.listbox yview"] -fill y -pady 4 -side left -expand no
            if {[info exists Option(-height)]} {
               $W.listbox config -height $Option(-height)
            }
         }
         "set" {
            catch {$W.listbox selection clear 0 end}; # Clear the existing selection in case the 'set' command is called multiple times
            if {[info exists Option(-multiple_selection)] && $Option(-multiple_selection)} {
               foreach o $Par {
                  catch {$W.listbox selection set [lsearch -exact [$W.listbox get 0 end] $o]}
                  catch {$W.listbox yview [lsearch -exact [$W.listbox get 0 end] $o]}
               }
            } else {
                  catch {$W.listbox selection set [lsearch -exact [$W.listbox get 0 end] $Par]}
                  catch {$W.listbox yview [lsearch -exact [$W.listbox get 0 end] $Par]}
            }
            }
         "get" {
            set Result {}
            foreach o [$W.listbox curselection] {
               lappend Result [$W.listbox get $o]
            }
            if {![info exists Option(-multiple_selection)] || !$Option(-multiple_selection)} {
               set Result [lindex $Result 0]
            }
            return $Result
         }
         "set_choice" {
            foreach v $Par {
               $W.listbox insert end $v
            }
            $W.listbox selection set 0
         }
      }
   }

   #### Disjoint listbox ####

   proc disjointlistbox_move {W Move} {
      switch $Move {
         "add" {
            $W.listbox2 selection clear 0 end
            foreach o [lsort -integer -increasing [$W.listbox1 curselection]] {
               if {[$W.listbox1 itemcget $o -foreground]=="grey"} continue
               $W.listbox2 insert end [$W.listbox1 get $o]
               $W.listbox2 selection set end
               $W.listbox1 itemconfigure $o -foreground grey
            }
            $W.listbox1 selection clear 0 end
         }
         "delete" {
            foreach o [lsort -integer -decreasing [$W.listbox2 curselection]] {
               for {set o1 0} {$o1<[$W.listbox1 index end]} {incr o1} {
                  if {[$W.listbox2 get $o]==[$W.listbox1 get $o1]} {
                     $W.listbox1 itemconfigure $o1 -foreground ""
                  }
               }
               $W.listbox2 delete $o
            }
         }
         "up" {
            foreach o [$W.listbox2 curselection] {
               if {$o==0} continue
               $W.listbox2 insert [expr $o-1] [$W.listbox2 get $o]
               $W.listbox2 delete [expr $o+1]
               $W.listbox2 selection set [expr $o-1]
            }
         }
         "down" {
            foreach o [lsort -integer -decreasing [$W.listbox2 curselection]] {
               if {$o==[$W.listbox2 index end]-1} continue
               $W.listbox2 insert [expr $o+2] [$W.listbox2 get $o]
               $W.listbox2 delete $o
               $W.listbox2 selection set [expr $o+1]
            }
         }
      }
   }

   proc ad_form(disjointlistbox) {W Command {Par ""}} {
      # puts "ad_form(listbox) $W $Command $Par"
      upvar Option Option
      switch $Command {
         "create" {
            ad_form(make_expandable) $W

            grid [label $W.label1 -text "Available"] -column 1 -row 0 -sticky ew
            grid [label $W.label2 -text "Selected"] -column 3 -row 0 -sticky ew

            grid [listbox $W.listbox1 -yscrollcommand "$W.scrollbar1 set" -exportselection 0 -selectmode extended] -column 1 -row 1 -rowspan 2 -sticky news
            grid [scrollbar $W.scrollbar1 -command "$W.listbox1 yview"] -column 2 -row 1 -rowspan 2 -sticky ns
            grid [listbox $W.listbox2 -yscrollcommand "$W.scrollbar2 set" -exportselection 0 -selectmode extended] -column 3 -row 1 -rowspan 2 -sticky news
            grid [scrollbar $W.scrollbar2 -command "$W.listbox2 yview"] -column 4 -row 1 -rowspan 2 -sticky ns

            grid [button $W.up -text "^" -command "::tepam::disjointlistbox_move $W up"] -column 5 -row 1 -sticky news
            grid [button $W.down -text "v" -command "::tepam::disjointlistbox_move $W down"] -column 5 -row 2 -sticky news

            grid [button $W.add -text ">" -command "::tepam::disjointlistbox_move $W add"] -column 1 -row 3 -columnspan 2 -sticky news
            grid [button $W.remove -text "<" -command "::tepam::disjointlistbox_move $W delete"] -column 3 -row 3 -columnspan 2 -sticky news

            foreach {Col Weight} {0 0  1 1   2 0   3 1   4 0   5 0} {
               grid columnconfigure $W $Col -weight $Weight
             }
            grid rowconfigure $W 1 -weight 1
            grid rowconfigure $W 2 -weight 1
            if {[info exists Option(-height)]} {
               $W.listbox1 config -height $Option(-height)
               $W.listbox2 config -height $Option(-height)
            }
         }
         "set" {
            # Delete an eventually previous selection (this should not be required by argument_dialogox)
            $W.listbox2 selection set 0 end
            disjointlistbox_move $W delete
            
            foreach o $Par {
               set p [lsearch -exact [$W.listbox1 get 0 end] $o]
               if {$p>=0} { # Delete the selected item from the available items
                  $W.listbox1 selection set $p
                  disjointlistbox_move $W add
               }
            }
         }
         "get" {
            return [$W.listbox2 get 0 end]
         }
         "set_choice" {
            foreach v $Par {
               $W.listbox1 insert end $v
            }
         }
      }
   }

   #### Checkbox ####

   proc ad_form(checkbox) {W Command {Par ""}} {
      upvar Option Option
      variable argument_dialogbox
      switch $Command {
         "create" {
            set argument_dialogbox($W,ButtonsW) {}
         }
         "set" {
            # Delete an eventually previous selection
            foreach ChoiceIndex [array names argument_dialogbox $W,values,*] {
               set argument_dialogbox($ChoiceIndex) ""
            }
            # Select the check buttons that correspond to the provided values 
            foreach v $Par {
               foreach BW $argument_dialogbox($W,ButtonsW) {
                  if {$v==[$BW cget -onvalue]} {
                     set [$BW cget -variable] $v
                  }
               }
            }
         }
         "get" { # Provide the selected items in the order of the provided choice list
            set Result {}
            foreach ChoiceIndex [lsort -dictionary [array names argument_dialogbox $W,values,*]] {
               if {$argument_dialogbox($ChoiceIndex)!=""} {
                  lappend Result $argument_dialogbox($ChoiceIndex) }
               }
            return $Result
         }
         "set_choice" {
            set ChoiceNumber 0
            set PackSide left
            if {[info exists Option(-direction)] && $Option(-direction)=="vertical"} {
               set PackSide top
            }
            foreach v $Par {
               set label $v
               catch {set label [lindex $Option(-choicelabels) $ChoiceNumber]}
               pack [checkbutton $W.choice_$ChoiceNumber -text $label -variable ::tepam::argument_dialogbox($W,values,$ChoiceNumber) -onvalue $v -offvalue ""] -side $PackSide -anchor w
               lappend argument_dialogbox($W,ButtonsW) $W.choice_$ChoiceNumber
               incr ChoiceNumber
            }
         }
      }
   }

   #### Radiobox ####

   proc ad_form(radiobox) {W Command {Par ""}} {
      upvar Option Option
      variable argument_dialogbox
      switch $Command {
         "create" {
            set argument_dialogbox($W,values) ""
         }
         "set" {
            set argument_dialogbox($W,values) $Par
         }
         "get" {
            return $argument_dialogbox($W,values)
         }
         "set_choice" {
            set argument_dialogbox($W,values) [lindex [lindex $Par 0] 0]
            set ChoiceNumber 0
            set PackSide left
            if {[info exists Option(-direction)] && $Option(-direction)=="vertical"} {
               set PackSide top
            }
            foreach v $Par {
               set label $v
               catch {set label [lindex $Option(-choicelabels) $ChoiceNumber]}
               pack [radiobutton $W.choice_$ChoiceNumber -text $label -variable ::tepam::argument_dialogbox($W,values) -value $v] -side $PackSide -anchor w
               incr ChoiceNumber
            }
         }
      }
   }

   #### Checkbutton ####

   proc ad_form(checkbutton) {W Command {Par ""}} {
      variable argument_dialogbox
      switch $Command {
         "create" {
            pack [checkbutton $W.checkb -variable ::tepam::argument_dialogbox($W,values)] -pady 4 -side left
            set argument_dialogbox($W,values) 0
         }
         "set" {
            set argument_dialogbox($W,values) $Par
         }
         "get" {
            return $argument_dialogbox($W,values)
         }
      }
   }

   #### Font selector ####

   proc ChooseFont_Update {W} {
      catch {$W.text config -font [ChooseFont_Get $W]}
   }

   proc ChooseFont_Get {W} {
      set Result {}
      if {![catch {lappend Result [$W.sels.lb_font get [$W.sels.lb_font curselection]] [$W.sels.lb_size get [$W.sels.lb_size curselection]]}]} {
         foreach Style {bold italic underline overstrike} {
            if {$::tepam::ChooseFont($W,$Style)} {
               lappend Result $Style
            }
         }
      }
      # puts Font:$Result
      return $Result
   }

   procedure ChooseFont {
      -args {
         {-title -type string -default "Font browser"}
         {-parent -type string -default "."}
         {-font_families -type string -default {}}
         {-font_sizes -type string -default {}}
         {-default -type string -optional}
      }
   } {
      regexp {^\.*(\..*)$} $parent.font_selection {} W
      catch {destroy $W}
      toplevel $W
      wm withdraw $W
      wm transient $W $parent
      wm group $W $parent
      wm title $W $title

      pack [label $W.into -text "Please choose a font and its size \nand style, then select OK." -justify left] -expand no -fill x

      pack [frame $W.sels] -expand yes -fill both
      pack [listbox $W.sels.lb_font -yscrollcommand "$W.sels.sb_font set" -exportselection 0 -height 10] -side left -expand yes -fill both
         bind $W.sels.lb_font <<ListboxSelect>> "::tepam::ChooseFont_Update $W"
      pack [scrollbar $W.sels.sb_font -command "$W.sels.lb_font yview"] -side left -expand no -fill both
      pack [listbox $W.sels.lb_size -yscrollcommand "$W.sels.sb_size set" -width 3 -exportselection 0 -height 10] -side left -expand no -fill both
         bind $W.sels.lb_size <<ListboxSelect>> "::tepam::ChooseFont_Update $W"
      pack [scrollbar $W.sels.sb_size -command "$W.sels.lb_size yview"] -side left -expand no -fill both

      set ButtonFont [font actual [[button $W.dummy] cget -font]]
      pack [frame $W.styles] -expand no -fill x
      pack [checkbutton $W.styles.bold -text B -indicatoron off -font "$ButtonFont -weight bold" -variable ::tepam::ChooseFont($W,bold) -command "::tepam::ChooseFont_Update $W"] -side left -expand yes -fill x
      pack [checkbutton $W.styles.italic -text I -indicatoron off -font "$ButtonFont -slant italic" -variable ::tepam::ChooseFont($W,italic) -command "::tepam::ChooseFont_Update $W"] -side left -expand yes -fill x
      pack [checkbutton $W.styles.underline -text U -indicatoron off -font "$ButtonFont -underline 1" -variable ::tepam::ChooseFont($W,underline) -command "::tepam::ChooseFont_Update $W"] -side left -expand yes -fill x
      pack [checkbutton $W.styles.overstrike -text O -indicatoron off -font "$ButtonFont -overstrike 1" -variable ::tepam::ChooseFont($W,overstrike) -command "::tepam::ChooseFont_Update $W"] -side left -expand yes -fill x

      pack [label $W.text -text "Test text 1234"] -expand no -fill x
      
      pack [frame $W.buttons] -expand no -fill x
      pack [button $W.buttons.ok -text OK -command "set ::tepam::ChooseFont($W,status) 0"] -side left -expand yes -fill x
      pack [button $W.buttons.cancel -text Cancel -command "set ::tepam::ChooseFont($W,status) 3"] -side left -expand yes -fill x

      # Create the font size and family lists. Use default lists when no family or sizes
      # are provided.
      if {$font_families=={}} {
         set font_families [font families]
      }
      foreach v $font_families {
         $W.sels.lb_font insert end $v
      }

      if {$font_sizes=={}} {
         set font_sizes {6 7 8 9 10 12 14 16 18 20 24 28 32 36 40}
      }
      foreach v $font_sizes {
         $W.sels.lb_size insert end $v
      }

      # Set the default font selection
      if {![info exists default]} {
         set default [$W.text cget -font]
         # puts "default:$default"
      }
      
      set Index [lsearch -exact $font_families [lindex $default 0]]
      if {$Index<0} {set Index [lsearch -exact $font_families [font actual $default -family]]}
      if {$Index<0} {set Index 0}
      # puts "[font actual $default -family] -> $Index"
      $W.sels.lb_font selection clear 0 end
      $W.sels.lb_font selection set $Index
      $W.sels.lb_font yview $Index

      set Index [lsearch -exact $font_sizes [lindex $default 0]]
      if {$Index<0} {set Index [lsearch -exact $font_sizes [font actual $default -size]]}
      if {$Index<0} {set Index 0}
      # puts "[font actual $default -size] -> $Index"
      $W.sels.lb_size selection clear 0 end
      $W.sels.lb_size selection set $Index
      $W.sels.lb_size yview $Index

      foreach Style {bold italic underline overstrike} {
         set ::tepam::ChooseFont($W,$Style) 0
      }
      foreach Style [lrange $default 2 end] {
         if {[info exists ::tepam::ChooseFont($W,$Style)]} {
            set ::tepam::ChooseFont($W,$Style) 1
         }
      }

      wm protocol $W WM_DELETE_WINDOW "set ::tepam::ChooseFont($W,status) 3"
      ConfigureWindowsGeometry $W "+[expr [winfo rootx $parent]+[winfo width $parent]+10]+[expr [winfo rooty $parent]+0]"
      wm deiconify $W

      # Wait until the OK or cancel button is pressed:
      set ::tepam::ChooseFont($W,status) ""
      vwait ::tepam::ChooseFont($W,status)
      
      set SelectedFont [ChooseFont_Get $W]
      destroy $W
      if {$::tepam::ChooseFont($W,status)==0} {return $SelectedFont}
      return ""
   }

   # Select_font sets the text and the font of the font entry to a font color: 
   proc select_font {W NewFont} {
      variable argument_dialogbox
      if {$NewFont!=""} {
         $W.entry delete 0 end
         $W.entry insert 0 $NewFont
      }
      $W.entry config -bg gray80
      catch {
         $W.entry config -font [$W.entry get]
         $W.entry config -bg $argument_dialogbox($W,DefaultEntryColor)
      }
   }

   proc ad_form(font) {W Command {Par ""}} {
      upvar Option Option
      variable argument_dialogbox
      if {![info exists Option(-type)]} {
         set Option(-type) font
      }
      set Title ""
      catch {set Title $Option(-label)}
      switch $Command {
         "create" {
            # The dedicated attributes -font_families and -font_sizes by this entry widget:
            set FamilyList [font families]
            catch {set FamilyList $Option(-font_families)}
            
            set SizeList {6 7 8 9 10 12 14 16 18 20 24 28 32 36 40}
            catch {set SizeList $Option(-font_sizes)}

            # Create the entry widget
            pack [entry $W.entry] -fill x -expand yes -pady 4 -side left
            pack [button $W.button -text Choose \
               -command "::tepam::select_font $W \[::tepam::ChooseFont -parent \{$W\} -title \{$Title\} -font_families \{$FamilyList\} -font_sizes \{$SizeList\} -default \[$W.entry get\]\]"] -pady 4 -side left
            bind $W.entry <Key-Return> "tepam::select_font $W {}"
            bind $W.entry <Leave> "tepam::select_font $W {}"

            set argument_dialogbox($W,DefaultEntryColor) [$W.entry cget -bg]

            # Use the default font of the entry widget as default font selection if its font 
            # family and font size is part of the selection lists. Use otherwise the first 
            # elements of the family list and the closest size for the default font.
            set DefaultFont [$W.entry cget -font]

            set DefaultFamily [font actual $DefaultFont -family]
            if {[lsearch -exact $FamilyList $DefaultFamily]<0} {
               set DefaultFamily [lindex $FamilyList 0]
            }

            set DefaultSize [font actual $DefaultFont -size]
            if {[lsearch -exact $SizeList $DefaultSize]<0} {
               set SizeList [lsort -real [concat $SizeList $DefaultSize]]
               set Pos [lsearch -exact $SizeList $DefaultSize]
               if {$Pos==0} {
                  set DefaultSize [lindex $SizeList 1]
               } elseif {$Pos==[llength $SizeList]-1} {
                  set DefaultSize [lindex $SizeList end-1]
               } elseif {[lindex $SizeList $Pos]-[lindex $SizeList [expr $Pos-1]] <
                         [lindex $SizeList [expr $Pos+1]]-[lindex $SizeList $Pos] } {
                  set DefaultSize [lindex $SizeList [expr $Pos-1]]
               } else {
                  set DefaultSize [lindex $SizeList [expr $Pos+1]]
               }
            }

            select_font $W [list $DefaultFamily $DefaultSize]
         }
         "set" {
            select_font $W $Par
         }
         "get" {
            return [$W.entry get]
         }
      }
   }

}; # End namespace tepam

# Specify the TEPAM version that is provided by this file:
package provide tepam 0.5

##########################################################################
# Id: tepam.tcl
# Modifications:
#
# TEPAM version 0.5 - 2013/10/14 droll
# * procedure command
#   - New procedure attributes: -validatecommand_error_text, -validatecommand
#   - Updated argument attribute: -validatecommand (the command is now 
#     executed in the context of the procedure body which allows accessing 
#     argument variables)
#   - New argument attribute: -validatecommand_error_text
#   - Minor bug fix: The TEPAM internal procedure list was incorrect if a 
#     procedure was defined multiple times.
#   - Procedure help generation: Indicate if an argument can be used multiple 
#     times
# * argument_dialogbox
#   - New global attributes: -validatecommand_error_text, -validatecommand
#   - New argument attributes: -validatecommand_error_text, -validatecommand,
#                              -validatecommand_error_text2, -validatecommand2
#
# TEPAM version 0.4.1 - 2013/03/25 droll
# * Correction of bug 3608952: Help text is incorrectly generated if procedures 
#   are part of the non-default namespaces
# * Correction of bug 3608951: Help text shows incorrect argument order if 
#   procedure is defined in the "unnamed arguments first, named arguments later" 
#    calling style.
#
# TEPAM version 0.4.0 - 2012/05/07 20:24:58  droll
# * Add the new text procedure argument type and the text multi line data
#   entry widget.
#
# TEPAM version 0.3.0 - 2012/03/26 20:44:10  droll
# * Add support to log the called procedures inside an array variable.
# * Simplify the value validation procedures using the 'string is'
#   procedure's -strict option.
# * Keep the original value list in the right list of the 'disjointlistbox'.
# * Add the procedure 'ConfigureWindowsGeometry' to handle window sizes
#   and positions.
#
# TEPAM version 0.2.0 - 2011/01/21 15:56:20  droll
# * Add the -widget option to the procedure arguments.
# * Add the -yscroll option to the argument dialog box.
# * Bug fixes for the following argument dialog box widgets:
#   - disjointlistbox: Keep always the same element order
#   - checkbox, radiobox: Handle correctly default values
#
# TEPAM version 0.1.0 - 2010/02/11 21:50:55  droll
# * First TEPAM revision
##########################################################################