/usr/share/gem/examples/02.advanced/14.RenderOrder.pd is in gem-doc 1:0.93.3-13.
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 866 81 movement on/off;
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#X text 735 28 priority 60 (>50);
#X text 748 51 dynamic ordering;
#X text 218 299 the rendering order does matter \, when doing things
like alpha-blending: alpha-blending only works if the semi-transparent
(alpha<1) object is rendered AFTER the objects that shine through;
#X text 596 291 this turns out to be a problem in dynamic scenes (eg:
with moving objects/viewpoint):: if a semi-transparent object used
to be "in front" of another semi-transparent object \, but suddenly
becomes "behind" \, the rendering order has to be changed. do this
\, by giving the [gemhead] a "set" message;
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