ocgs=None, policy='AnyOn', ve=None) • New in v1.18.4 Create or update an OCMD, Optional Content Membership Dictionary. Parameters • xref (int) – xref of the OCMD to be updated, or 0 for a new OCMD. • programmatically. 452 Chapter 25. Glossary PyMuPDF Documentation, Release 1.24.2 OCMD Optional content membership dictionary – a dictionary object which can be used like an OCG: it has a visibility state. The features to support PDF Optional Content. Among other things, this includes OCMDs (Op- tional Content Membership Dictionaries) with the full scope of “visibility expressions” (PDF key /VE), text insertions (including