**Reason**
This extension has not been updated in a long, long time. Its extension page states that it does not support MediaWiki 1.16beta3 and later, and has not seen any non-maintenance update in almost a decade. In addition, the maintainer is globally banned on WMF.
**To-do list**
- This task
-- [x] Add maintainers of that extension as subscribers to this task: Not possible, user is globally banned.
-- [x] Add Phabricator project
- On-wiki documentation
-- [x] Archive documentation on `mediawiki.org` (https://www.mediawiki.org/wiki/Extension:PureWikiDeletion): replace page contents with `{{TNT|Archived extension|3280425|reason=This extension has not been updated in a long, long time. It does not support MediaWiki 1.16beta3 and later, see [[phab:T225991]]}}`; include a link to this task in the `reason` parameter.
-- [x] Archive Wikidata item associated with documentation page (https://www.wikidata.org/wiki/Q21678138) (remove nearly all statements, except `instance of (P31) = MediaWiki extension (Q6805426)`, which should add a qualifier `end time (P582) = the YYYY-MM-DD date that you decided to archive extension, generally per edit history`, change English (and other languages if possible) description to "archived MediaWiki extension" (and its translation)).
- Phabricator
-- [x] Mark all Phabricator tasks for the extension either Declined or Invalid. (https://phabricator.wikimedia.org/search/query/wmrKCvG67gva/)
- Translatewiki.net/translations
-- [ ] Remove from `translatewiki.net` (`groups/MediaWiki/mediawiki-extensions.txt`) (add #translatewiki.net project as a tag for this task).
- Configuration/tests/integrations/etc.
-- [ ] Remove from `mediawiki/extensions` (along with in `.gitmodules`).
-- [ ] Remove tests in [[ https://gerrit.wikimedia.org/g/integration/config | `integration/config` ]] (`zuul/layout.yaml`).
- Repositories
-- [x] Empty repository leaving only the README indicating the repo is archived and referring to this task by URL.
-- [x] Mark the repository read-only in Gerrit (Edit description to prepend "[ARCHIVED]" and append Task reference): (https://gerrit.wikimedia.org/g/mediawiki/extensions/PureWikiDeletion).
-- [x] Archive the diffusion repository for the extension: (rEPWD).
-- [ ] Delete the GitHub mirror: (https://github.com/wikimedia/mediawiki-extensions-PureWikiDeletion).