Special:Preferences should support a URL parameter that makes it open to a specified user preference, rather than just starting on the "General" tab. For example:
http://example.com/wiki/Special:Preferences?pref=showtoc
would cause Special:Preferences to open with its Appearance tab active, since that is where the "showtoc" (Show table of contents) checkbox lives.
This would be a great help with documentation. Instead of wiki pages saying, "Click My Preferences, then click the Appearance tab," they can provide a direct link to the setting in question.
This feature opens the doors to useful doc templates like this one:
Change the setting "{{MediaWiki:tog-{{{1}}}}}" by clicking [{{fullurl:Special:Preferences|pref={{{1}}}}} HERE].
This request is related to bug 27559, which asks for Special:Preferences to open a specified tab. My suggestion abstracts away the tab and focuses on the preference setting itself... after all, the Preferences UI could change someday (say, changing tabs into something else), but the preference names are not likely to change.
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**Version**: 1.24rc
**Severity**: enhancement
**See Also**:
https://bugzilla.wikimedia.org/show_bug.cgi?id=67846