/usr/lib/pd/extra/hcs/pwm-help.pd is in pd-hcs 0.1-5.
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 | #N canvas 172 95 530 434 10;
#X text 140 148 the argument sets the frequency;
#X obj 88 102 tgl 15 0 empty empty empty 0 -6 0 8 -24198 -1 -1 1 1
;
#X obj 142 96 hsl 128 15 0 1 0 0 empty empty amount -2 -6 1 12 -261681
-1 -1 11100 1;
#X floatatom 149 118 5 0 0 0 - - -;
#X text 14 20 this object does Pulse Width Modulation at the message
rate:;
#X text 3 101 turn on/off;
#X obj 77 397 pddp/pddplink http://en.wikipedia.org/wiki/Pulse-width_modulation
;
#X text 17 376 for more info:;
#N canvas 0 0 450 300 graph1 0;
#X array \$0-pwm 200 float 0;
#X coords 0 1.2 199 -0.2 200 140 1;
#X restore 284 202 graph;
#N canvas 727 94 454 304 display 0;
#X obj 115 35 inlet;
#X obj 117 265 tabwrite \$0-pwm;
#X obj 238 127 float;
#X obj 281 127 + 1;
#X obj 275 157 arraysize \$0-pwm;
#X obj 250 31 inlet;
#X obj 356 110 bang;
#X obj 258 181 mod;
#X obj 116 103 spigot;
#X obj 118 239 float;
#X obj 194 204 trigger bang float;
#X obj 237 105 metro 3;
#X connect 0 0 8 0;
#X connect 2 0 7 0;
#X connect 3 0 2 1;
#X connect 4 0 7 1;
#X connect 5 0 6 0;
#X connect 5 0 8 1;
#X connect 5 0 11 0;
#X connect 6 0 4 0;
#X connect 7 0 3 0;
#X connect 7 0 10 0;
#X connect 8 0 9 1;
#X connect 9 0 1 0;
#X connect 10 0 9 0;
#X connect 10 1 1 1;
#X connect 11 0 2 0;
#X restore 95 310 pd display guts;
#X obj 195 283 tgl 15 0 empty empty display 0 -6 0 8 -225271 -1 -1
1 1;
#X obj 96 147 pwm 10;
#X connect 1 0 11 0;
#X connect 2 0 3 0;
#X connect 2 0 11 1;
#X connect 10 0 9 1;
#X connect 11 0 9 0;
|