Merge pull request #5515 from dotCooCoo/fix/ai-look-copies-type-docs

Docs: cite where a group's or layer's effect comes from in the .ai look copies entry

docs/target-app-parity.md

@@ -1135,7 +1135,7 @@ Moved from the ROADMAP's "Shipped so far" on 2026-10-10. Update it when a featur
     Legacy `.ai` saves (version 7) write type with rotated characters (Character Rotation, Touch Type turns) as its outlines, with a warning that it is no longer editable text (unless `outlineText` already asks for every type object as outlines): a version 7 text object has no character rotation ([Adobe Illustrator File Format Specification 7.0](https://www.nationalarchives.gov.uk/PRONOM/fmt/423), §15), and the outlines keep each character's rotation, baseline shift and scale (`legacy_ai::tests::type_with_rotated_characters_is_outlines_that_keep_the_rotation`).
     A PDF saved with Illustrator's editing data opens through it as a PDF-compatible `.ai` does, with its layers and groups and with art reaching past its page unclipped; such a PDF holds the data in `AIPDFPrivateData` streams (part of #868). A shape a PDF or `.ai` paints with a gradient (a clip path round a shading) opens as one path filled with the gradient, not a clip group round a rectangle, so Shape Builder, Live Paint and Pathfinder work on its outline (#1304).
     In a `.ai` opened from its editing data, a text object on a layer that shows and doesn't print stays on that layer, made from the file's text document, even where the page doesn't draw it (`crates/eps/src/import/tests_native.rs`). Such a `.ai` opens without the PDF part's warnings that text was kept as outlines when no outlined glyphs come in, and a warning counts the text objects that hold the page's type next to glyphs the page has only as outlines, which don't come in (`crates/engine/src/cmd/fileio/tests_aiimport.rs`). Where the art of a `.ai` or EPS opened from its editing data differs a little from the file's page, the warning gives the share of the page that differs away from type. When that share is 0.2% or less, the warning names the type and gives the share of the page that differs where the type is; when all the type is made from the text document, the type's share has a warning of its own beside the art's (`crates/eps/src/import/tests_native.rs`).
-    In a `.ai` or EPS opened from its editing data, where a layer's or group's drawn look draws a copy of art with type, the import puts the page's type that lies over the copy's other art into the copy's group, instead of giving it to other text objects by painting order. Type beside the copy's art, and every copy's type in a file past the import's text-object limits, still goes by painting order. Without a page, such a copy has no type, and no warning counts it as left out (`crates/eps/src/import/tests_native.rs`).
+    In a `.ai` or EPS opened from its editing data, where a layer's or group's drawn look (an effect can be attached to a group or a layer, [Vector and raster effects](https://helpx.adobe.com/illustrator/desktop/special-effects-styles/apply-filter-effects/vector-and-raster-effects.html)) draws a copy of art with type, the import puts the page's type that lies over the copy's other art into the copy's group, instead of giving it to other text objects by painting order. Type beside the copy's art, and every copy's type in a file past the import's text-object limits, still goes by painting order. Without a page, such a copy has no type, and no warning counts it as left out. How the page's type is matched with a copy is VectorCraft's own rule (`crates/eps/src/import/tests_native.rs`).
     A `.ai` opened from its editing data keeps Effect › Pathfinder on a group with no fills or strokes of its own as a live effect, with the group's members editable: Add, shown or hidden, in its order among the group's effects. The other operations, Pathfinder Options values other than the ones the reader accepts, and the effect on a path, on type, or on a fill or stroke open as the drawn look (`crates/eps/src/import/ai/style.rs`, `pathfinder_effect`).
     PDF text opens with every glyph where the file draws it (#722): the font's kerning or none, whichever the file followed, word and character spacing, `TJ` adjustments and horizontal scaling kept per character as tracking, text rise as baseline shift within its line, vertical glyphs narrower than an em centred on their column (`/W2`, `/W`, `/DW`), justified text boxes with word spacing back as justified area type (`tests_text_placement`, fixtures written from ISO 32000-1 §9).
     A `.ai` or PDF whose editing data holds a readable variable library opens with its variable definitions, data-set rows, text, visibility and linked-file values, active row and lock in the Variables panel, whether its layers are read or it comes in as its PDF part; graph values and malformed entries are skipped with a note, and objects aren't bound yet (`crates/eps/src/import/ai/tests.rs`, `crates/engine/src/cmd/fileio/tests_aiimport.rs`).