/usr/lib/pd/extra/cyclone/phasewrap~-help.pd is in pd-cyclone 0.2~beta3-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#X text 0 19 LICENSE SIBSD;
#X text 0 95 LIBRARY cyclone;
#X text 0 76 OUTLET_0 signal;
#X text 0 0 KEYWORDS signal wrap -pi pi phase;
#X text 0 38 DESCRIPTION wrap a signal between -pi and pi;
#X text 0 57 INLET_0 signal;
#X text 2 115 VERSION 0.2-beta1;
#X text 2 133 AUTHOR Krzysztof Czaja;
#X text 3 151 RELEASE_DATE 2002;
#X text 4 170 WEBSITE http://suita.chopin.edu.pl/~czaja/miXed/externs/cyclone.html
;
#X text 4 202 HELP_PATCH_AUTHORS Christoph Kummerer. Revised by Jonathan
Wilkes for Pd-extended 0.42 to conform to the PDDP template. Alex Cleveland
updated this patch for Pd-l2ork version 2013.05.28. Fred Jan Kraan
adapted the patch to pd-extended 2015-02-02;
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#X text 12 23 wrap a signal between -pi and pi;
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#X text 113 343 signal;
#X text 178 343 - signal to wrap the phase;
#X text 113 384 signal;
#X text 178 384 - the wrapped signal;
#X text 113 424 (none);
#X text 20 54 modify the incoming signal;
#X obj 29 174 cyclone/phasewrap~;
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#X text 93 270 wrapped output;
#X text 24 295 (always in the range of -pi to pi);
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#X text 44 194 The array is placed in a sub-patch to prevent audio
dropouts;
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