/usr/lib/pd/extra/list-abs/list-extend.pd is in pd-list-abs 0.1-1.
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 | #N canvas 354 269 450 300 10;
#X obj 77 41 inlet;
#X obj 156 66 inlet;
#X obj 77 257 outlet;
#X text 72 21 add new elements to stored list and output it;
#X text 156 47 set stored list \, no output;
#X obj 77 153 list prepend;
#X obj 172 153 t a;
#X connect 0 0 5 0;
#X connect 1 0 5 1;
#X connect 5 0 6 0;
#X connect 5 0 2 0;
#X connect 6 0 5 1;
|