Module optional_content 

Optional-content (layer) configuration: the catalog’s /OCProperties default configuration determines which optional-content groups render. Membership evaluation for /OC entries (OCG refs, OCMDs and visibility expressions) lives in zpdf-content, which has the object graph in hand; this module only answers “is group X on?”.

Structs

OcConfig

The document’s default optional-content configuration (/OCProperties /D).

Functions

parse_oc_config

Parse /OCProperties from the document catalog. Returns None when the document declares no optional content.