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/usr/lib/pd/extra/cyclone/matrix~-help.pd is in pd-cyclone 0.2~beta3-2.

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#N canvas 317 82 569 440 10;
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#X obj 2 389 cnv 3 550 3 empty empty inlets 8 12 0 13 -228856 -1 0
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#N canvas 611 363 351 231 META 0;
#X text 1 20 LICENSE SIBSD;
#X text 1 100 LIBRARY cyclone;
#X text 1 0 KEYWORDS signal switching matrix mixing;
#X text 1 40 DESCRIPTION a switching or mixing matrix for signals;
#X text 1 60 INLET_N signal message;
#X text 1 80 OUTLET_N signal list;
#X text 0 121 VERSION 0.2-beta1;
#X text 0 139 AUTHOR Krzysztof Czaja;
#X text 1 157 RELEASE_DATE 2002;
#X text 2 176 WEBSITE http://suita.chopin.edu.pl/~czaja/miXed/externs/cyclone.html
;
#X text 2 208 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 42 242 ramp ramptime;
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#X msg 245 182 clear;
#X text 180 498 - mixed or switched signals from inlets;
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