This file is indexed.

/usr/share/psychtoolbox-3/PsychBasic/KbName.m is in psychtoolbox-3-common 3.0.9+svn2579.dfsg1-1.

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
function kbNameResult = KbName(arg)
% kbNameResult = KbName(arg)
% 	
% 	KbName maps between KbCheck-style keyscan codes and key names.
% 	
% 	* If arg is a string designating a key label then KbName returns the 
% 	  keycode of the indicated key.  
%
% 	* If arg is a keycode, KbName returns the label of the designated key. 
%
% 	* If no argument is supplied then KbName waits one second and then 
%     calls KbCheck.  KbName then returns a cell array holding the names of
%     all keys which were down at the time of the KbCheck call. The 
%     one-second delay preceeding the call to KbCheck avoids catching the 
%     <return> keypress used to execute the KbName function. 
%
%   * If arg is 'UnifyKeyNames', KbName will switch its internal naming
%     scheme from the operating system specific scheme (which was used in
%     the old Psychtoolboxes on MacOS-9 and on Windows) to the MacOS-X
%     naming scheme, thereby allowing to use one common naming scheme for
%     all operating systems, increasing portability of scripts. It is
%     recommended to call KbName('UnifyKeyNames'); at the beginning of each
%     new experiment script.
% 	  CAUTION: This function may contain bugs. Please report them (or fix
% 	  them) if you find some.
%
%   * If arg is 'KeyNames', KbName will print out a table of all
%     keycodes->keynames mappings.
%
%   * If arg is 'KeyNamesOSX', KbName will print out a table of all
%     keycodes->keynames mappings for MacOS-X.
%
%   * If arg is 'KeyNamesOS9', KbName will print out a table of all
%     keycodes->keynames mappings for MacOS-9.
%
%   * If arg is 'KeyNamesWindows', KbName will print out a table of all
%     keycodes->keynames mappings for M$-Windows.
%
%   * If arg is 'KeyNamesLinux', KbName will print out a table of all
%     keycodes->keynames mappings for GNU/Linux, X11.
%
% 	KbName deals with keys, not characters. See KbCheck help for an 
% 	explanation of keys, characters, and keycodes.   
% 	
%   Please note that KbName always assumes a US keyboard layout. Changing
%   the keyboard layout settings in your operating system will have no
%   effect. If a keyboard with non-US layout is connected, e.g, a german
%   keyboard layout, then certain keys may not match. E.g., on a german
%   keyboard, the 'Y' key will be reported as 'Z' key and the 'Z' key will
%   be reported as 'Y' key, because these two keys are interchanged on the
%   german keyboard wrt. the US keyboard.
%
% 	There are standard character sets, but there are no standard key 
% 	names.  The convention KbName follows is to name keys with  the primary
% 	key label printed on the key.  For example, the the "]}"  key is named
% 	"]" because "]" is the primary key label and "}" is the  shifted key
% 	function.  In the case of  labels such as "5", which appears  on two
% 	keys, the name "5" designates the "5" key on the numeric keypad  and
% 	"5%" designates the QWERTY "5" key. Here, "5" specifies the primary 
% 	label of the key and the shifted label, "%" refines the specification, 
% 	distinguishing it from keypad "5".  Keys labeled with symbols not 
% 	represented in character sets are assigned names describing those
% 	symbols  or the key function, for example the space bar is named
% 	"space" and the apple  key is named "apple".  Some keyboards have
% 	identically-labelled keys distinguished 
%   only by their positions on the keyboard, for example, left and right
%   shift  keys.  Windows operating systems more recent than Windows 95 can
%   distinguish between such keys.  To name such keys, we precede the key
%   label with either  "left_" or "right_", to create the key name.  For
%   example, the left shift key  is called "left_shift".
% 	
% 	Use KbName to make your scripts more readable and portable, using key 
% 	labels instead of keycodes, which are cryptic and vary between Mac and
% 	Windows computers.  
%
% 	For example, 
% 	
% 	yesKey = KbName('return');           
% 	[a,b,keyCode] = KbCheck;
% 	if keyCode(yesKey)
% 		flushevents('keyDown');
% 		...
% 	end;
%
% OS X _ OS9 _ Windows __________________________________________________
%
%   OS X, OS 9 and Windows versions of KbCheck return different keycodes.
%   You can mostly  overcome those differences by using KbName, but with
%   some complications:
%
%   While most keynames are shared between Windows and Macintosh, not all
%   are. Some key names are used only on Windows, and other key names are
%   used only on Macintosh. For a lists of key names common to both
%   platforms and unique to each see the comments in the  body of KbName.m.
%
%   KbName will try to use a mostly shared name mapping if you add the
%   command KbName('UnifyKeyNames'); at the top of your experiment script.
%   At least the names of special keys like cursor keys, function keys and
%   such will be shared between the operating systems then.
%
%   Your computer might be able to distinguish between identically named
%   keys.  For example, left and right shift keys, or the "enter" key on
%   the keyboard and the enter key on the numeric keypad. Which of these
%   keys it can destinguish depends on the operating system. For details,
%   see comments in the body of KbName.m.
%
%   Historically, different operating systems used different keycodes
%   because they used different types of keyboards: PS/2 for Windows, ADB
%   for OS 9, and USB for OS 9, Windows, and OSX.  KbCheck on OS X returns
%   USB keycodes. 
% 	
% _________________________________________________________________________
%
% 	See also KbCheck, KbDemo, KbWait.

%   HISTORY 
%
% 	12/16/98    awi     wrote it
% 	02/12/99    dgp     cosmetic editing of comments
% 	03/19/99    dgp     added "enter" and "function" keys. Cope with hitting multiple keys.
%   02/07/02    awi     added Windows keycodes
%   02/10/02    awi     modified to return key names within a cell array in the case
%                       where no arguments are passed to KbName and it calls KbCheck.
%   02/10/02    awi     Modifed comments for changes made to Windows version. 
%   04/10/02	awi		-Cosmetic
%						-Fixed bug where "MAC2"  case was not in quotes
%						-Fixed bug where Mac loop searching for empty cells overran max index.
%   09/27/02    awi     Wrapped an index in Find() becasue Matlab will no longer index
%						matrices with logicals. 
%   06/18/03    awi     Complete rewrite featuring recursive calls to KbName, new key names, and 
%						a shared execution path for all platforms.  The key codes have been renamed
%                       to be abbreviations of standard USB keycode names.  This breaks scripts
%                       which relied on the old names but fixes the problem
%                       that KbName returned different names on Mac and Windows. See www.usb.org
%						for a table of USB HID keycodes and key names.  
%   06/24/03    awi     Added keycodes for OS 9 KbCheck  
%   06/25/03    awi     -Lowered all keycodes by 1 to match official USB table.  Previously
%						the KbCheck keycodes were the offical USB keycodes + 1 because
%						the USB table is zero-indexed whereas Matlab matrices are one-indexed.
%						As a consequence of this change KbName and KbCheck will not handle keycode
%						0, but that is ok because keycode 0 is not really used for anything.  
%						-Moved test for logical above the the test for doubles  
%						because on OS 9 logicals are also doubles.
%						-Declared the cell arrays to be persistent to conserve 
%						resources.
%	06/25/03	awi		The comment of 09/27/02 (see above) is incorrect, Matlab does still
%						support indexing with logical vectors.  Really the problem
%						was that with Matlab 6 the C mex API had changed and mxSetLogical
%						was unsupported.  KbCheck was not returning an array marked as 
%						type logical. Mex files should use mxCreateLogicalArray() or 
%						mxCreateLogicalMatrix() instead of mxSetLogical.  
% 	
%   10/12/04    awi     Cosmetic changes to comments.
%	 10/4/05    awi     Note here cosmetic changes by dgp on unknown date between 10/12/04 and 10/4/05   
%   12/31/05    mk      Transplanted the keycode table from old WinPTB KbName to OS-X KbName.
%                       This is a hack until we have PsychHID for Windows and can share the table
%                       with OS-X table.
%   21.09.06    mk      Added new command KbName('UnifyKeyNames'), which
%                       remaps many of the Windows/Linux keynames to the OS-X naming scheme for
%                       greater portability of newly written scripts.
%   27.10.06    mk      Yet another bugfix for KbName, see forum message 5247.
%   15.03.07    mk      Minimal fix to recognize uint8 type bools on Linux
%                       to fix some issue with Matlab7 on Linux.
%    6.04.09    mk      In KbName('UnifyKeyNames') Override
%                       'LockingNumLock' to become 'NumLock' on OS/X.
%   13.06.09    mk      Remove special code for Octave on all platforms except Windows.
%   21.11.09    mk      Add bugfix for failures with multiple 'Return' keys,
%                       provided by Jochen Laubrock.
%   29.09.10    mk      Add missing definition of ',<' key to Windows version.
%   20.10.11    mk      Add missing definition of 'pause' key to Windows version.

%   TO DO
%
%   -Add feature where we accept a matrix of logical row vectors.   
%
%   -Update help documentation:  Add OS X section, Explain new key names, the feature which returns
%   the table, that k=KbName;streq(KbName(KbName(k)),k) is one test of KbName,
%   that keyboards do not distinquish between left and right versions of
%   keys though the standard specifies different keycodes, the problem with the 'a' key.  

persistent kkOSX kkOS9 kkWin kkLinux kk
persistent escapedLine

%_________________________________________________________________________
% Windows part
% This is a complete hack: The code between if IsWin and the corresponding end;
% is the code of the old KbName command of the old Windows Psychtoolbox.
%
%
% These Key names are shared between Mac and Windows

if isempty(kkOSX)
	kkOSX = cell(1,256);
	kkOS9 = cell(1,256);
	kkWin = cell(1,256);
   
   % MK: Until we have a PsychHID for GNU/Linux, we query Screen for the
   % scancode to keychar mapping table:
   if IsLinux   
    kkLinux = Screen('GetMouseHelper', -3);
   else
    kkLinux = cell(1,256);
   end;
   
   % Need to manually encode sequence '\|' so Octave doesn't complain about
   % unrecognized escaped character sequence :-I
   escapedLine = char([92, 124]);
   
   % MK: Until we have a PsychHID for windows, we use this table for the
   % Windows keycode mappings. I stole it from the old WinPTB ;)
   kkWin{65} = 'a';
   kkWin{83} = 's';
   kkWin{68} = 'd';
   kkWin{70} = 'f';
   kkWin{72} = 'h';
   kkWin{71} = 'g';
   kkWin{90} = 'z';
   kkWin{88} = 'x';
   kkWin{67} = 'c';
   kkWin{86} = 'v';
   kkWin{66} = 'b';
   kkWin{81} = 'q';
   kkWin{87} = 'w';
   kkWin{69} = 'e';
   kkWin{82} = 'r';
   kkWin{89} = 'y';
   kkWin{84} = 't';
   kkWin{49} = '1!';
   kkWin{50} = '2@';
   kkWin{51} = '3#';
   kkWin{52} = '4$';  
   kkWin{53} = '5%';
   kkWin{54} = '6^';
   kkWin{187} = '=+';
   kkWin{57} = '9(';
   kkWin{55} = '7&';
   kkWin{189} = '-_';
   kkWin{56} = '8*';
   kkWin{48} = '0)';
   kkWin{221} = ']';
   kkWin{79} = 'o';
   kkWin{85} = 'u';
   kkWin{219} = '[';
   kkWin{73} = 'i';
   kkWin{80} = 'p';
   kkWin{13} = 'return';
   kkWin{76} = 'l';
   kkWin{74} = 'j';
   kkWin{222} = char(39);       % single quote
   kkWin{75} = 'k';
   kkWin{186} = ';';
   kkWin{220} = '\\';
   kkWin{188} = ',<';
   kkWin{191} = '/?';
   kkWin{78} = 'n';
   kkWin{77} = 'm';
   kkWin{190} = '.>';
   kkWin{9} = 'tab';
   kkWin{32} = 'space';
   kkWin{192} = '`';
   kkWin{46} = 'delete';
   kkWin{27} = 'esc';
   kkWin{16} = 'shift';  % Note: Windows distinguishes between left an right shift keys.
   kkWin{20} = 'capslock';
   kkWin{17} = 'control'; % Note: Windows distinguishes between left and right control keys
   kkWin{110} = '.';      
   kkWin{106} = '*';
   kkWin{107} = '+';
   kkWin{12} = 'clear';  
   kkWin{111} = '/';
   kkWin{109} = '-';
   kkWin{96} = '0';
   kkWin{97} = '1';
   kkWin{98} = '2';
   kkWin{99} = '3';
   kkWin{100} = '4';
   kkWin{101} = '5';
   kkWin{102} = '6';
   kkWin{103} = '7';
   kkWin{104} = '8';
   kkWin{105} = '9';
   kkWin{116} = 'f5';
   kkWin{117} = 'f6';
   kkWin{118} = 'f7';
   kkWin{114} = 'f3';
   kkWin{119} = 'f8';
   kkWin{120} = 'f9';
   kkWin{122} = 'f11';
   kkWin{124} = 'f13';
   kkWin{125} = 'f14';
   kkWin{121} = 'f10';
   kkWin{123} = 'f12';
   kkWin{126} = 'f15';  
   kkWin{47} = 'help';    
   kkWin{36} = 'home';
   kkWin{33} = 'pageup';
   kkWin{115} = 'f4';
   kkWin{35} = 'end';
   kkWin{113} = 'f2';
   kkWin{34} = 'pagedown';
   kkWin{112} = 'f1';
   kkWin{37} = 'left';
   kkWin{39} = 'right';
   kkWin{40} = 'down';
   kkWin{38} = 'up';
   
   % Keynames used only on Windows
   kkWin{91} = 'windows_left';
   kkWin{92} = 'windows_right';
   kkWin{93} = 'applications';
   kkWin{108} = 'seperator';
   kkWin{127} = 'f16';
   kkWin{128} = 'f17';
   kkWin{129} = 'f18';
   kkWin{130} = 'f19';
   kkWin{131} = 'f20';
   kkWin{132} = 'f21';
   kkWin{133} = 'f22';
   kkWin{134} = 'f23';
   kkWin{135} = 'f24';
   kkWin{144} = 'numlock';
   kkWin{145} = 'scrolllock';
   kkWin{246} = 'attn';
   kkWin{247} = 'crsel';
   kkWin{248} = 'exsel';
   kkWin{251} = 'play';
   kkWin{252} = 'zoom';
   kkWin{254} = 'pa1';
   kkWin{8} = 'backspace';
   kkWin{1} = 'left_mouse';
   kkWin{2} = 'right_mouse';
   kkWin{4} = 'middle_mouse';
   kkWin{45} = 'insert';
   kkWin{18} = 'alt';
   kkWin{19} = 'Pause';                            

   % Keynames used only in Windows >95
   kkWin{160} = 'left_shift';
   kkWin{161} = 'right_shift';
   kkWin{162} = 'left_control';
   kkWin{163} = 'right_control';
   kkWin{91} = 'left_menu';
   kkWin{92} = 'right_menu';
   
   
	%OS X column                                    OS 9 column             	Win Column
	
	% kk{0} = 'Undefined (no event indicated)';									%Wait until there is PsychHID 
	kkOSX{1} = 'ErrorRollOver';                              					%for Windows then use the OS X 
	kkOSX{2} = 'POSTFail';														%table.  
	kkOSX{3} = 'ErrorUndefined';
	kkOSX{4} = 'a';                                 kkOS9{1}='a';
	kkOSX{5} = 'b';                                 kkOS9{12}='b';                                                                                                       
	kkOSX{6} = 'c';                                 kkOS9{9}='c';                                         
	kkOSX{7} = 'd';                                 kkOS9{3}='d';                                          
	kkOSX{8} = 'e';                                 kkOS9{15}='e';                                          
	kkOSX{9} = 'f';                                 kkOS9{4}='f';                                          
	kkOSX{10} = 'g';                                kkOS9{6}='g';                                         
	kkOSX{11} = 'h';                                kkOS9{5}='h'; 
	kkOSX{12} = 'i';                                kkOS9{35}='i';  
	kkOSX{13} = 'j';                                kkOS9{39}='j';
	kkOSX{14} = 'k';                                kkOS9{41}='k';
	kkOSX{15} = 'l';                                kkOS9{38}='l'; 
	kkOSX{16} = 'm';                                kkOS9{47}='m'; 
	kkOSX{17} = 'n';                                kkOS9{46}='n'; 
	kkOSX{18} = 'o';                                kkOS9{32}='o';   
	kkOSX{19} = 'p';                                kkOS9{36}='p';  
	kkOSX{20} = 'q';                                kkOS9{13}='q';  
	kkOSX{21} = 'r';                                kkOS9{16}='r'; 
	kkOSX{22} = 's';                                kkOS9{2}='s';
	kkOSX{23} = 't';                                kkOS9{18}='t';
	kkOSX{24} = 'u';                                kkOS9{33}='u';
	kkOSX{25} = 'v';                                kkOS9{10}='v'; 
	kkOSX{26} = 'w';                                kkOS9{14}='w'; 
	kkOSX{27} = 'x';                                kkOS9{8}='x'; 
	kkOSX{28} = 'y';                                kkOS9{17}='y';  
	kkOSX{29} = 'z';                                kkOS9{7}='z'; 
	kkOSX{30} = '1!';                               kkOS9{19}='1!'; 
	kkOSX{31} = '2@';                               kkOS9{20}='2@';
	kkOSX{32} = '3#';                               kkOS9{21}='3#';  
	kkOSX{33} = '4$';                               kkOS9{22}='4$';
	kkOSX{34} = '5%';                               kkOS9{24}='5%'; 
	kkOSX{35} = '6^';                               kkOS9{23}='6^';  
	kkOSX{36} = '7&';                               kkOS9{27}='7&'; 
	kkOSX{37} = '8*';                               kkOS9{29}='8*';
	kkOSX{38} = '9(';                               kkOS9{26}='9(';
	kkOSX{39} = '0)';                               kkOS9{30}='0)';
	kkOSX{40} = 'Return';                           kkOS9{37}='Return';
	kkOSX{41} = 'ESCAPE';                           kkOS9{54}='ESCAPE';
	kkOSX{42} = 'DELETE';                           kkOS9{52}='DELETE';
	kkOSX{43} = 'tab';                              kkOS9{49}='tab';
	kkOSX{44} = 'space';                            kkOS9{50}='space';
	kkOSX{45} = '-_';                               kkOS9{28}='-_';
	kkOSX{46} = '=+';                               kkOS9{25}='=+'; 
	kkOSX{47} = '[{';                               kkOS9{34}='[{'; 
	kkOSX{48} = ']}';                               kkOS9{31}=']}'; 
	kkOSX{49} = escapedLine;                        kkOS9{43}=escapedLine;
	kkOSX{50} = '#-';                               
	
	kkOSX{51} = ';:';                               kkOS9{42}=';:';   
	kkOSX{52} = '''"';                              kkOS9{40}='''"';                    
	kkOSX{53} = '`~';                               kkOS9{51}='`~';
	kkOSX{54} = ',<';                               kkOS9{44}=',<'; 
	kkOSX{55} = '.>';                               kkOS9{48}='.>';
	kkOSX{56} = '/?';                               kkOS9{45}='/?';     
	kkOSX{57} = 'CapsLock';                         kkOS9{58}='CapsLock'; %FIX if other capslock
	kkOSX{58} = 'F1';                               kkOS9{123}='F1'; 
	kkOSX{59} = 'F2';                               kkOS9{121}='F2';
	kkOSX{60} = 'F3';                               kkOS9{100}='F3'; 
	kkOSX{61} = 'F4';                               kkOS9{119}='F4'; 
	kkOSX{62} = 'F5';                               kkOS9{97}='F5';
	kkOSX{63} = 'F6';                               kkOS9{98}='F6';
	kkOSX{64} = 'F7';                               kkOS9{99}='F7';   
	kkOSX{65} = 'F8';                               kkOS9{101}='F8';     
	kkOSX{66} = 'F9';                               kkOS9{102}='F9'; 
	kkOSX{67} = 'F10';                              kkOS9{110}='F10'; 
	kkOSX{68} = 'F11';                              kkOS9{104}='F11'; 
	kkOSX{69} = 'F12';                              kkOS9{112}='F12';
	kkOSX{70} = 'PrintScreen';                       
	kkOSX{71} = 'ScrollLock';                       
	kkOSX{72} = 'Pause';                            
	kkOSX{73} = 'Insert';                           
	kkOSX{74} = 'Home';                             kkOS9{116}='Home'; 
	kkOSX{75} = 'PageUp';                           kkOS9{117}='PageUp';   
	kkOSX{76} = 'DeleteForward';                    kkOS9{118}='DeleteForward';
	kkOSX{77} = 'End';                              kkOS9{120}='End';
	kkOSX{78} = 'PageDown';                         kkOS9{122}='PageDown'; 
	kkOSX{79} = 'RightArrow';                       kkOS9{125}='RightArrow'; 
	kkOSX{80} = 'LeftArrow';                        kkOS9{124}='LeftArrow';
	kkOSX{81} = 'DownArrow';                        kkOS9{126}='DownArrow';
	kkOSX{82} = 'UpArrow';                          kkOS9{127}='UpArrow';
	kkOSX{83} = 'NumLockClear';                     kkOS9{72}='NumLockClear';
	kkOSX{84} = '/';                                kkOS9{76}='/'; 
	kkOSX{85} = '*';                                kkOS9{68}='*';
	kkOSX{86} = '-';                                kkOS9{79}='-';
	kkOSX{87} = '+';                                kkOS9{70}='+';
	kkOSX{88} = 'ENTER';                            kkOS9{77}='ENTER';   
	kkOSX{89} = '1';                                kkOS9{84}='1';
	kkOSX{90} = '2';                                kkOS9{85}='2';  
	kkOSX{91} = '3';                                kkOS9{86}='3'; 
	kkOSX{92} = '4';                                kkOS9{87}='4';
	kkOSX{93} = '5';                                kkOS9{88}='5'; 
	kkOSX{94} = '6';                                kkOS9{89}='6';  
	kkOSX{95} = '7';                                kkOS9{90}='7'; 
	kkOSX{96} = '8';                                kkOS9{92}='8'; 
	kkOSX{97} = '9';                                kkOS9{93}='9';
	kkOSX{98} = '0';                                kkOS9{83}='0'; 
	kkOSX{99} = '.';                                kkOS9{66}='.';
	
	% Non-US.  
	% Typically near the Left-Shift key in AT-102 implementations.
	kkOSX{100} = ['NonUS' escapedLine];                              
	
	% Windows key for Windows 95, and ?Compose.?
	kkOSX{101} = 'Application';                     
	
	% Reserved for typical keyboard status or keyboard errors. Sent as a member of the keyboard array. Not a physical key.
	kkOSX{102} = 'Power';                                       
	kkOSX{103} = '=';                               kkOS9{82}='=';
	kkOSX{104} = 'F13';                             kkOS9{106}='F13';
	kkOSX{105} = 'F14';                             kkOS9{108}='F14';   
	kkOSX{106} = 'F15';                             kkOS9{114}='F15'; 
	kkOSX{107} = 'F16';                            
	kkOSX{108} = 'F17';                            
	kkOSX{109} = 'F18';                            
	kkOSX{110} = 'F19';                             
	kkOSX{111} = 'F20';                           
	kkOSX{112} = 'F21';                           
	kkOSX{113} = 'F22';                            
	kkOSX{114} = 'F23';                             
	kkOSX{115} = 'F24';                            
	kkOSX{116} = 'Execute';                        
	kkOSX{117} = 'Help';                            kkOS9{115}='Help';
	kkOSX{118} = 'Menu';                            
	kkOSX{119} = 'Select';                         
	kkOSX{120} = 'Stop';                            
	kkOSX{121} = 'Again';                          
	kkOSX{122} = 'Undo';                           
	kkOSX{123} = 'Cut';                          
	kkOSX{124} = 'Copy';                            
	kkOSX{125} = 'Paste';                           
	kkOSX{126} = 'Find';                            
	kkOSX{127} = 'Mute';                           
	kkOSX{128} = 'VolumeUp';                        
	kkOSX{129} = 'VolumeDown';                      
	
	%Implemented as a locking key; sent as a toggle button. Available for legacy support; however, most systems should use the non-locking version of this key.
	kkOSX{130} = 'LockingCapsLock';                  
	
	%Implemented as a locking key; sent as a toggle button. Available for legacy support; however, most systems should use the non-locking version of this key.
	kkOSX{131} = 'LockingNumLock';                  
	
	%Implemented as a locking key; sent as a toggle button. Available for legacy support; however, most systems should use the non-locking version of this key.
	kkOSX{132} = 'LockingScrollLock';               
	
	% Keypad Comma is the appropriate usage for the Brazilian keypad period (.) key. 
	%This represents the closest possible match, and system software should do the correct mapping based on the current locale setting.
	kkOSX{133} = 'Comma';                            
	
	kkOSX{134} = 'EqualSign';                       
	kkOSX{135} = 'International1';                 
	kkOSX{136} = 'International2';                  
	kkOSX{137} = 'International3';                  
	kkOSX{138} = 'International4';                  
	kkOSX{139} = 'International5';                  
	kkOSX{140} = 'International6';                  
	kkOSX{141} = 'International7';                  
	kkOSX{142} = 'International8';                  
	kkOSX{143} = 'International9';                  
	kkOSX{144} = 'LANG1';                           
	kkOSX{145} = 'LANG2';                           
	kkOSX{146} = 'LANG3';                          
	kkOSX{147} = 'LANG4';                          
	kkOSX{148} = 'LANG5';                          
	kkOSX{149} = 'LANG6';                         
	kkOSX{150} = 'LANG7';                           
	kkOSX{151} = 'LANG8';                          
	kkOSX{152} = 'LANG9';                           
	kkOSX{153} = 'AlternateErase';                 
	kkOSX{154} = 'SysReq/Attention';               
	kkOSX{155} = 'Cancel';                         
	kkOSX{156} = 'Clear';                          
	kkOSX{157} = 'Prior';                        
	kkOSX{158} = 'Return';                         
	kkOSX{159} = 'Separator';                       
	kkOSX{160} = 'Out';                          
	kkOSX{161} = 'Oper';                        
	kkOSX{162} = 'Clear/Again';                 
	kkOSX{163} = 'CrSel/Props';                  
	kkOSX{164} = 'ExSel';                           
	kkOSX{165} = 'Undefined';                       
	kkOSX{166} = 'Undefined';                       
	kkOSX{167} = 'Undefined';                       
	kkOSX{168} = 'Undefined';                       
	kkOSX{169} = 'Undefined';                       
	kkOSX{170} = 'Undefined';                       
	kkOSX{171} = 'Undefined';                       
	kkOSX{172} = 'Undefined';                      
	kkOSX{173} = 'Undefined';                       
	kkOSX{174} = 'Undefined';                      
	kkOSX{175} = 'Undefined';                       
	kkOSX{176} = '00';                              
	kkOSX{177} = '000';                            
	kkOSX{178} = 'ThousandsSeparator';             
	kkOSX{179} = 'DecimalSeparator';               
	kkOSX{180} = 'CurrencyUnit';                    
	kkOSX{181} = 'CurrencySub-unit';                
	kkOSX{182} = '(';                              
	kkOSX{183} = ')';                               
	kkOSX{184} = '{';                               
	kkOSX{185} = '}';                               
	kkOSX{186} = 'KeypadTab';                       
	kkOSX{187} = 'KeypadBackspace';                 
	kkOSX{188} = 'KeypadA';                         
	kkOSX{189} = 'KeypadB';                        
	kkOSX{190} = 'KeypadC';                         
	kkOSX{191} = 'KeypadD';                        
	kkOSX{192} = 'KeypadE';                        
	kkOSX{193} = 'KeypadF';                         
	kkOSX{194} = 'XOR';                            
	kkOSX{195} = '^';                               
	kkOSX{196} = '%';                               
	kkOSX{197} = '<';                               
	kkOSX{198} = '>';                               
	kkOSX{199} = '&';                              
	kkOSX{200} = '&&';                              
	kkOSX{201} = '|';                              
	kkOSX{202} = '||';                            
	kkOSX{203} = ':';                            
	kkOSX{204} = '#';                               
	kkOSX{205} = 'KeypadSpace';                     
	kkOSX{206} = '@';                              
	kkOSX{207} = '!';                               
	kkOSX{208} = 'MemoryStore';                     
	kkOSX{209} = 'MemoryRecall';                   
	kkOSX{210} = 'MemoryClear';                     
	kkOSX{211} = 'MemoryAdd';                      
	kkOSX{212} = 'MemorySubtract';                 
	kkOSX{213} = 'MemoryMultiply';                 
	kkOSX{214} = 'MemoryDivide';                   
	kkOSX{215} = '+/-';                             
	kkOSX{216} = 'KeypadClear';                    
	kkOSX{217} = 'KeypadClearEntry';                
	kkOSX{218} = 'KeypadBinary';                    
	kkOSX{219} = 'KeypadOctal';                     
	kkOSX{220} = 'KeypadDecimal';                  
	kkOSX{221} = 'Undefined';                       
	kkOSX{222} = 'Undefined';                       
	kkOSX{223} = 'Undefined';                       
	kkOSX{224} = 'LeftControl';                     kkOS9{60}='LeftControl';    %double entry  
	kkOSX{225} = 'LeftShift';                       kkOS9{57}='LeftShift';      %double entry
	kkOSX{226} = 'LeftAlt';                         kkOS9{59}='LeftAlt';        %double entry
	
	%Windows key for Windows 95, and ?Compose.?  Windowing environment key, examples are Microsoft Left Win key, Mac Left Apple key, Sun Left Meta key
	kkOSX{227} = 'LeftGUI';                         kkOS9{56}='LeftGUI';        %double entry
	
	kkOSX{228} = 'RightControl';                    %kkOS9{60}='RightControl'; % FIX double entry
	kkOSX{229} = 'RightShift';                      %kkOS9{57}='RightShift'; % FIX double entry
	kkOSX{230} = 'RightAlt';                        %kkOS9{59}='RightAlt';   % FIX double entry
	kkOSX{231} = 'RightGUI';                        %kkOSX{56} ='RightGUI';  % FIX double entry                                              
	kkOSX{232} = 'Undefined';                      
	kkOSX{233} = 'Undefined';                     
	kkOSX{234} = 'Undefined';                   
	kkOSX{235} = 'Undefined';                      
	kkOSX{236} = 'Undefined';                   
	kkOSX{237} = 'Undefined';                       
	kkOSX{238} = 'Undefined';                      
	kkOSX{239} = 'Undefined';                      
	kkOSX{240} = 'Undefined';                       
	kkOSX{241} = 'Undefined';                      
	kkOSX{242} = 'Undefined';                    
	kkOSX{243} = 'Undefined';                      
	kkOSX{244} = 'Undefined';                    
	kkOSX{245} = 'Undefined';                       
	kkOSX{246} = 'Undefined';                      
	kkOSX{247} = 'Undefined';                       
	kkOSX{248} = 'Undefined';                      
	kkOSX{249} = 'Undefined';                       
	kkOSX{250} = 'Undefined';                       
	kkOSX{251} = 'Undefined';                       
	kkOSX{252} = 'Undefined';                      
	kkOSX{253} = 'Undefined';                     
	kkOSX{254} = 'Undefined';                       
	kkOSX{255} = 'Undefined';                       
	kkOSX{256} = 'Undefined';                                              
	% 257-65535 E8-FFFF Reserved
	
	% Platform-specific key names.  The PowerBook G3 built-in keyboard might
	% not be 
	kkOS9{64}='MacPowerbookG3Function';
	kkOS9{53}='MacPowerbookG3Enter';
	
	% Fill in holes in the OS9 table
	for i=1:256
	    if(isempty(kkOS9{i}))
	        kkOS9{i}='Undefined';
	    end
	end

	% Choose the default table according to the platform
	if IsOS9
	        kk=kkOS9;
	elseif IsOSX
	    	kk=kkOSX;
	elseif IsWin
	        kk=kkWin;
    elseif IsLinux
            kk=kkLinux;
	end
	

end %if ~exist(kkOSX)
        
%if there are no inputs then use KbCheck to get one and call KbName on
%it.
if nargin==0
    WaitSecs(1);
    keyPressed = 0;
    while (~keyPressed)
        [keyPressed, secs, keyCodes] = KbCheck(-1);
    end
    kbNameResult= KbName(logical(keyCodes));  %note that keyCodes should be of type logical here.

elseif isempty(arg)
    % Empty argument. Could happen when the returned keyCode vector of
    % KbCheck did not report any depressed keys:
    kbNameResult=[];

%if the argument is a logical array then convert to a list of doubles and
%recur on the result. 
%Note that this case must come before the test for double below.  In Matlab 5 logicals are also
%doubles but in Matlab 6.5 logicals are not doubles.  
elseif islogical(arg) | (isa(arg,'double') & length(arg)==256) | (isa(arg,'uint8') & length(arg)==256)
    kbNameResult=KbName(find(arg));

%if the argument is a single double or a list of doubles (list of keycodes)
%or a single uint8 or list of uint8's (list of keycodes).
elseif isa(arg,'double') | isa(arg,'uint8')
    %single element, the base case, we look up the name.
    if length(arg) == 1
        if(arg < 1 | arg > 65535)
            error('Argument exceeded allowable range of 1-65536');
        elseif arg > 255 
            kbNameResult='Undefined';
        else
            kbNameResult=kk{arg};
        end;
    else
        %multiple numerical values, we iterate accross the list and recur
        %on each element.
        for i = 1:length(arg)
            kbNameResult{i}=KbName(arg(i));
        end
    end

%argument is  a single string so either it is a...
% - command requesting a table, so return the table.
% - key name, so lookup and return the corresponding key code.
elseif ischar(arg)      % argument is a character, so find the code
    if strcmpi(arg, 'Undefined')
        kbNameResult=[];            % is is not certain what we should do in this case.  It might be better to issue an error.
    elseif strcmpi(arg, 'KeyNames')  %list all keynames for this platform
        kbNameResult=kk;
    elseif strcmpi(arg, 'KeyNamesOSX')  %list all kenames for the OS X platform
        kbNameResult=kkOSX;
    elseif strcmpi(arg, 'KeyNamesOS9')
        kbNameResult=kkOS9;
    elseif strcmpi(arg, 'KeyNamesWindows')
        kbNameResult=kkWin;
    elseif strcmpi(arg, 'KeyNamesLinux')
        kbNameResult=kkLinux;
    elseif strcmpi(arg, 'UnifyKeyNames')
        % Calling code requests that we use the OS-X keyboard naming scheme
        % on all platforms. The OS-X scheme is modelled after the official
        % naming scheme for USB-HID Human interface device keyboards.
        % If we ever have a PsychHID implementation for Windows and Linux,
        % we'll have a unified keycode->keyname mapping and can get rid of
        % all this remapping cruft and the other keyboard tables.
        %
        % On OS-X and OS-9 this is a no-op, all other platforms need remapping...
        
        if IsWin
            % The following routine remaps specific Windows keycodes to their
            % corresponding OS-X / USB-HID keynames. We remap the original
            % Windows keynames as closely as possible, but there will be
            % certainly some omissions and mistakes.
            kk{8} = 'BackSpace';
            kk{13} = 'Return';
            kk{219} = '[{';
            kk{221} = ']}';
            kk{192} = '`~';
            kk{46} = 'DELETE';
            kk{27} = 'ESCAPE';
            kk{12} = 'Clear';
            kk{16} = 'Shift';
            kk{20} = 'CapsLock';
            kk{112} = 'F1';
            kk{113} = 'F2';
            kk{114} = 'F3';
            kk{115} = 'F4';
            kk{116} = 'F5';
            kk{117} = 'F6';
            kk{118} = 'F7';
            kk{119} = 'F8';
            kk{120} = 'F9';
            kk{121} = 'F10';
            kk{122} = 'F11';
            kk{123} = 'F12';
            kk{124} = 'F13';
            kk{125} = 'F14';
            kk{126} = 'F15';
            kk{160} = 'LeftShift';
            kk{161} = 'RightShift';
            kk{162} = 'LeftControl';
            kk{163} = 'RightControl';
            kk{91} = 'LeftMenu';
            kk{92} = 'RightMenu';
            kk{47} = 'Help';
            kk{36} = 'Home';
            kk{33} = 'PageUp';
            kk{45} = 'Insert';
            kk{35} = 'End';
            kk{34} = 'PageDown';
            kk{37} = 'LeftArrow';
            kk{39} = 'RightArrow';
            kk{40} = 'DownArrow';
            kk{38} = 'UpArrow';
            kk{164} = 'LeftAlt';
            kk{165} = 'RightAlt';
            kk{144} = 'NumLock';
            kk{145} = 'ScrollLock';
            kk{44} = 'PrintScreen';
            kk{91} = 'LeftGUI';
            kk{92} = 'RightGUI';
            kk{93} = 'Application';
            kk{19} = 'Pause';
        end
        
        if IsLinux
            % Remapping of Linux aka X11 keynames to OS-X/USB-HID keynames:
            % All relevant/important keys should be there now.
            KEYREMAP_TABLE = {
             'Up', 'UpArrow';
             'Down', 'DownArrow';
             'Left', 'LeftArrow';
             'Right', 'RightArrow';
             'Shift_R', 'RightShift';
             'Shift_L', 'LeftShift';
             'Prior', 'PageUp';
             'Next', 'PageDown';
             'Delete', 'DELETE';
             'Escape', 'ESCAPE';
             'Caps_Lock', 'CapsLock';
             'Control_R', 'RightControl';
             'Control_L', 'LeftControl';
             'Alt_L', 'LeftAlt';
             'Alt_R', 'RightAlt';
             'Mode_switch', 'RightAlt';
             'Super_L', 'LeftGUI';
             'Super_R', 'RightGUI';
             'Menu', 'Application';
             'Num_Lock', 'NumLock';
             'Scroll_Lock', 'ScrollLock';
             'Print', 'PrintScreen';
             'backslash', escapedLine;
             'Tab', 'tab';
             'apostrophe', '''"';
             'semicolon', ';:';
             'period', '.>';
             'comma', ',<';
             'slash', '/?';
	     'equal', '=+';
	     'minus', '-_';
	     'bracketright', ']}';
	     'bracketleft', '[{';
	     'grave', '`~';
	     'KP_Enter', 'Return';
	     'KP_Add', '+';
	     'KP_Subtract', '-';
	     'KP_Multiply', '*';
	     'KP_Divide', '/';
	     'KP_Delete', '.';
	     'KP_Insert', '0';
	     'KP_End',   '1';
	     'KP_Down',  '2';
	     'KP_Next',  '3';
	     'KP_Left',  '4';
	     'KP_Begin', '5';
	     'KP_Right', '6';
	     'KP_Home',  '7';
	     'KP_Up',    '8';
	     'KP_Prior', '9';
             '0', '0)';
             '1', '1!';
             '2', '2@';
             '3', '3#';
             '4', '4$';
             '5', '5%';
             '6', '6^';
             '7', '7&';
             '8', '8*';
             '9', '9(' };

            for i=1:length(KEYREMAP_TABLE)
                keycodes_indexes = find(strcmp(kkLinux, KEYREMAP_TABLE{i,1}));
                for index=keycodes_indexes
                    %index
                    %KEYREMAP_TABLE(i,1)
                    kk{index} = KEYREMAP_TABLE{i,2};
                end
                % If length(keycodes_indexes) == 0
                % ??? psychlasterror('reset');
                % end
            end
        end
        
        if IsOSX
            kk{131} = 'NumLock'; % Override 'LockingNumLock' ...
            % FIXME: kk{83} = 'NumLock'; % Override 'NumLockClear' as well?!?
        end
        
        % End of keyname unification code.
    else
        if IsOctave & IsWin
            % GNU/Octave on Windows does not yet support index mode for strcmpi, need to do it manually...
            for i=1:length(kk)
                if strcmpi(char(kk(i)), arg)
                    kbNameResult = i;
                    break;
                end
            end
        else
            kbNameResult=find(strcmpi(kk, arg));
        end
        if isempty(kbNameResult)
            error(['Key name "' arg '" not recognized. Maybe you need to add KbName(''UnifyKeyNames''); to top of your script?']);
        end
    end

% we have a cell arry of strings so iterate over the cell array and recur on each element.    
elseif isa(arg, 'cell')
    kbNameResult = [];
	cnt = 1;
    for i = 1:length(arg)
		codes = KbName(arg{i});
		ncodes = numel(codes);
		kbNameResult(cnt) = codes(1);
		if ncodes>1
			kbNameResult(cnt+1:cnt+ncodes-1) = codes(2:ncodes);
		end
		cnt = cnt + ncodes;		
    end
else
    error('KbName can not handle the supplied argument. Please check your code or read the "help KbName".');
end