<symbol> with <use> imports as a symbol (named after data-name or its id)
with one instance per <use>; a <use> that shows the symbol differently
(inherited paint, a viewport that cuts it) or that the canvas would paint
differently under its transform stays plain art. feGaussianBlur,
feDropShadow and the usual shadow chains (offset, blur, flood or colour
matrix, composite, merge) become Gaussian Blur, Drop Shadow, Outer/Inner
Glow and Feather effects; other filters are still reported. Export records
the symbol name and the shadow/glow blend mode so export -> import keeps
them. <pattern> keeps importing as a pattern swatch (now tested).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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