/usr/share/puredata/doc/5.reference/key-help.pd is in puredata-core 0.48.1-3.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | #N canvas 146 45 546 288 12;
#X obj 21 10 key;
#X obj 54 9 keyup;
#X obj 105 9 keyname;
#X text 173 8 -- grab keyboard;
#X obj 38 67 key;
#X floatatom 38 95 3 0 0 0 - - -;
#X floatatom 77 93 3 0 0 0 - - -;
#X obj 77 67 keyup;
#X floatatom 128 93 3 0 0 0 - - -;
#X obj 128 67 keyname;
#X symbolatom 172 94 10 0 0 0 - - -;
#X text 280 262 updated for Pd version 0.32.;
#X text 26 133 Key and keyup report the (system dependent) numbers
of "printing" keys of the keyboard. Keyname gives the symbolic name
of the key \, with a 1 or 0 if it's up or down \, and works with non-printing
keys like shift or "F1".;
#X text 18 200 Caveat -- this only works if Pd actually gets the key
events which can depend on the stacking order of windows and/or the
pointer location \, depending on the system.;
#X connect 4 0 5 0;
#X connect 7 0 6 0;
#X connect 9 0 8 0;
#X connect 9 1 10 0;
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