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/usr/lib/pd/extra/cyclone/cartopol~-help.pd is in pd-cyclone 0.2~beta1-2.

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#X text 1 20 LICENSE SIBSD;
#X text 1 140 LIBRARY cyclone;
#X text 1 0 KEYWORDS signal cartesian polar conversion;
#X text 1 40 DESCRIPTION cartesian to polar conversion for signals
;
#X text 1 80 INLET_1 signal;
#X text 1 60 INLET_0 signal;
#X text 1 100 OUTLET_0 signal;
#X text 1 120 OUTLET_1 signal;
#X text 0 162 VERSION 0.2-beta1;
#X text 0 180 AUTHOR Krzysztof Czaja;
#X text 1 198 RELEASE_DATE 2002;
#X text 2 217 WEBSITE http://suita.chopin.edu.pl/~czaja/miXed/externs/cyclone.html
;
#X text 2 249 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 185 322 - amplitude;
#X text 185 349 - phase;
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