- The sidebar.
- Labels for [[Special:Preferences#mw-prefsection-gadgets]] (the gadgets section of user preferences). Background:
https://commons.wikimedia.org/wiki/Commons:Village_pump#Template:Gadget-desc_performance
Issue: We are currently using [[Template:LangSwitch]] in separate templates (that are protected anyway) for translation. It would be more efficient using Interface Messages + cache fragmentation is not an issue as [[Special:Preferences]] is not parser cached.
Version: wmf-deployment
Severity: enhancement