This file is indexed.

/usr/lib/pd/extra/pdp/pdp_scan~-help.pd is in pd-pdp 1:0.14.1-3+b1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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#N canvas 387 370 666 499 10;
#X obj 73 140 pdp_scan~;
#X obj 73 113 phasor~;
#X floatatom 73 86 5 0 0;
#X obj 73 353 dac~;
#X obj 13 48 pdp_help_input;
#X msg 13 19 start;
#X obj 13 397 pdp_help_output;
#X obj 73 311 *~;
#X floatatom 89 282 5 0 0;
#X obj 73 251 hip~ 20;
#X floatatom 117 224 5 0 0;
#X floatatom 131 171 5 0 0;
#X obj 73 198 lop~ 1000;
#X msg 217 102 interpolate \$1;
#X obj 217 76 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1
;
#X text 216 124 set interpolation between consecutive packets on/off
;
#X text 216 142 (the audio crossfade size is determined by the pd blocksize.
so you can use a block~ object to set this);
#X text 218 236 the waveform is scanned from the luma plane of an image.
the path is an oval centered at the middle of the image with axes equal
to 60% of the image width/height.;
#X text 214 43 pdp_scan~: oval scanned synthesis with a phase input
;
#X connect 0 0 12 0;
#X connect 1 0 0 0;
#X connect 2 0 1 0;
#X connect 4 0 0 0;
#X connect 4 0 6 0;
#X connect 5 0 4 0;
#X connect 7 0 3 0;
#X connect 7 0 3 1;
#X connect 8 0 7 1;
#X connect 9 0 7 0;
#X connect 10 0 9 1;
#X connect 11 0 12 1;
#X connect 12 0 9 0;
#X connect 13 0 0 0;
#X connect 14 0 13 0;