# About the PIP-0109 category

**URL:** <https://discourse.prolog-lang.org/t/about-the-pip-0109-category/168>\
**Category:** PIP-0109\
**Created:** [October 16, 2025, 1:30pm UTC](https://discourse.prolog-lang.org/t/about-the-pip-0109-category/168 "2025-10-16T13:30:41Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![herme](https://discourse.prolog-lang.org/user_avatar/discourse.prolog-lang.org/herme/32/27_2.png) [@herme](https://discourse.prolog-lang.org/u/herme)\
**Post date:** [October 16, 2025, 1:30pm UTC](https://discourse.prolog-lang.org/t/about-the-pip-0109-category/168/1 "2025-10-16T13:30:41Z")

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> See [PIP 0109 - Syntax for labeled subterms](https://prolog-lang.org/ImplementersForum/0109-labeled-subterms.html)

To start/continue discussion: open a new topic within this subcategory or reply within an existing topic.R