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#X text 80 573 written by Yves Degoyon ( ydegoyon@free.fr );
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#X msg 391 319 unhide 0;
#X text 464 325 Unhide <index>;
#X text 412 301 Hide <x1> <y1> <x2> <y2> <x3> <y3>;
#X text 412 290 Hide a triangular zone :;
#X text 464 314 Unhide a triangular zone :;
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#X text 80 557 pdp_cache : hide triangular zones from a video stream
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#X text 411 367 Same as hide but with percentages;
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