All libraries that need documentation can be found at https://github.com/addwiki .
Each of the libraries documentation is stored in the library repo within the `docs` directory.
The documentation is written using the RST markup.
An example commit introducing documentation for a single feature of one of the libraries can be [found here](https://github.com/addwiki/mediawiki-api/commit/b17ffb5b3294a0566afa6f0e4a07243fcb3c1529#diff-e3e2a9bfd88566b05001b02a3f51d286) but note that the example commit includes an error, and [these services should not be constructed directly but instead retreived from the relevant factory](https://github.com/addwiki/mediawiki-api/blob/b17ffb5b3294a0566afa6f0e4a07243fcb3c1529/src/MediawikiFactory.php#L125).
Features that need documentation can be found in the lists below:
- https://github.com/addwiki/mediawiki-datamodel (14 tasks)
[] https://github.com/addwiki/mediawiki-datamodel/blob/master/src/Content.php
[] https://github.com/addwiki/mediawiki-datamodel/blob/master/src/EditInfo.php
[] https://github.com/addwiki/mediawiki-datamodel/blob/master/src/File.php
[] https://github.com/addwiki/mediawiki-datamodel/blob/master/src/Log.php
[] https://github.com/addwiki/mediawiki-datamodel/blob/master/src/LogList.php
[] https://github.com/addwiki/mediawiki-datamodel/blob/master/src/NamespaceInfo.php
[] https://github.com/addwiki/mediawiki-datamodel/blob/master/src/Page.php
[] https://github.com/addwiki/mediawiki-datamodel/blob/master/src/PageIdentifier.php
[] https://github.com/addwiki/mediawiki-datamodel/blob/master/src/Pages.php
[] https://github.com/addwiki/mediawiki-datamodel/blob/master/src/Redirect.php
[] https://github.com/addwiki/mediawiki-datamodel/blob/master/src/Revision.php
[] https://github.com/addwiki/mediawiki-datamodel/blob/master/src/Revisions.php
[] https://github.com/addwiki/mediawiki-datamodel/blob/master/src/Title.php
[] https://github.com/addwiki/mediawiki-datamodel/blob/master/src/User.php
- https://github.com/addwiki/mediawiki-api (21 tasks)
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/FileUploader.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/ImageRotator.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/LogListGetter.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/PageDeleter.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/PageListGetter.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/PageMover.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/PageProtector.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/PagePurger.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/PageRestorer.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/PageWatcher.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/Parser.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/RevisionDeleter.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/RevisionPatroller.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/RevisionRestorer.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/RevisionRollbacker.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/RevisionSaver.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/RevisionUndoer.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/UserBlocker.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/UserCreator.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/UserGetter.php
[] https://github.com/addwiki/mediawiki-api/blob/master/src/Service/UserRightsChanger.php
- https://github.com/addwiki/wikibase-api (25 tasks)
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Lookup/EntityApiLookup.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Lookup/EntityRedirectApiLookup.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Lookup/ItemApiLookup.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Lookup/PropertyApiLookup.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Lookup/TermApiLookup.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/AliasGroupSetter.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/BadgeIdsGetter.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/DescriptionSetter.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/EntityDocumentSaver.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/ItemMerger.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/LabelSetter.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/RedirectCreator.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/ReferenceRemover.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/ReferenceSetter.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/RevisionGetter.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/RevisionSaver.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/RevisionsGetter.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/SiteLinkLinker.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/SiteLinkSetter.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/StatementCreator.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/StatementGetter.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/StatementRemover.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/StatementSetter.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/ValueFormatter.php
[] https://github.com/addwiki/wikibase-api/blob/master/src/Api/Service/ValueParser.php
Once you've added documentation to a feature, make sure to click "Edit Task" on https://phabricator.wikimedia.org/T145376 and change the checkbox from `[]` to `[X]` (to let others know that the feature has been documented).