E05 — Build animatable symbols

Field	Content
For	symbol designers
who	need symbols whose parts can react to a state
the solution	symbols in the Symbol Editor
is a	a group of shapes with ports and animatable parts
that	one symbol drawn once, animated by any configuration
unlike	one drawing per state
our solution	parts are animated, not redrawn
Business outcomes	a symbol with ports and animatable parts (color, blinking, opacity, visibility, partial fill, rotation) previews each animation
Leading indicators	reference symbols (pump, valve, tank) built
Non-functional requirements	animations smooth enough for a synoptic view
In scope	ports, animatable parts, animation preview (the shape tree comes from E13)
Out of scope	business meaning (E06)
Closure criteria	a pump symbol with two ports and animated parts works end to end

Candidate features