/usr/lib/pd/extra/iemlib/gui-menu.pd is in pd-iemlib 1.20.1-2.
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 | #N canvas 149 58 200 219 10;
#X obj 23 126 bng 15 250 50 0 empty empty empty 8 -8 0 10 0 22 22;
#X obj 78 127 toggle 15 0 empty empty empty 8 -8 0 10 0 22 22 0;
#X obj 13 184 hslider 128 15 0 127 0 0 empty empty empty 8 -8 0 10 0 22 22 0;
#X obj 115 25 vslider 15 128 0 127 0 0 empty empty empty 8 -8 0 10 0 22 22 0;
#X obj 135 26 vu 15 120 empty empty 8 -8 0 10 2 22;
#X obj 9 46 my_canvas 15 100 60 empty 20 12 2 20 10 2;
#X obj 11 163 radiobut 15 1 0 8 empty empty empty 8 -8 0 10 0 22 22 0;
#X text 134 161 rdb;
#X text 147 183 hsl;
#X text 113 5 vsl;
#X text 140 5 vu;
#X text 22 109 bng;
#X text 76 109 tgl;
#X text 11 26 my_canvas;
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