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M11: transparency: cite the ISO 32000-1 clauses that define transparent painting

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Pq7HyDBXygTf7jcqdsjcfn
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mtlcl410
2026-11-05 10:56:01 +08:00
co-authored by Claude Opus 5.5
parent be2c726935
commit 0b2c452bb1
1 changed files with 1 additions and 1 deletions
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crates/preflight/src/transparency.rs
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@@ -3,7 +3,7 @@
//! space: its `/Group` dictionary has a `/CS` entry.
//!
//! A page contains transparency when something its resources reach can paint transparently (ISO
//! 32000-1 11.6.4.4 and 11.7.4): a graphics state with a constant alpha (`/CA`, `/ca`) below 1,
//! 32000-1 11.6.4.4 to 11.6.6): a graphics state with a constant alpha (`/CA`, `/ca`) below 1,
//! a blend mode other than `Normal` or `Compatible`, or a soft mask; an image with a soft mask
//! (`/SMask`, or `/SMaskInData` above 0); or a transparency group XObject. The resources looked
//! through are the page's own, those of the form XObjects, tiling patterns and Type 3 fonts they