Each 'media/<item>/<file>' entry is written to '<template> Media/<item>/<file>'
only when <item> is all digits and <file> is a plain file name (not empty, '.'
or '..', no separators, and on Windows no drive, stream or device name), and
the written path is checked to sit in an item folder of '<template> Media'.
read_stored skips entries with absolute, drive or '..' names.
Adding a property already in the Essential Graphics panel adds a mirror
(EgKind::Mirror: own name and place, one value in the comp and in every
instance; editing, reverting or pushing either acts on both). A property
control can also drive further properties of the comp (links follow the
main property both ways and take instance values). essential.addMirror,
essential.linkProperty, essential.unlinkProperty; panel badges and menu;
ExtendScript addToMotionGraphicsTemplate(As), canAddToMotionGraphicsTemplate,
motionGraphicsTemplateName, controller count/name and
exportAsMotionGraphicsTemplate.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Comps expose controls (properties typed as text/color/slider/checkbox/point/angle/dropdown,
Media Replacement, groups, comments); precomp layers get an Essential Properties group whose
edits override per instance (Push to Comp / Revert); templates export/import as an open ZIP
(manifest.json + project subset + media + poster). Stretched precomps keep protected regions
at their original speed.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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