Research:How does the user interface affect editor work?
(RQ6.1) How has markup complexity changed over time?
(RQ6.2) Did the drop in retention correlate with an increase in the introduction of complex markup (<ref>s, inline templates, etc.)?
(RQ6.3) Do articles which include complex markup receive fewer edits by 0-9 or 0-100 editors?
(RQ6.4) How have add-ons (Huggle, Twinkle), extensions (LiquidThreads, AbuseFilter), and other features of the MediaWiki platform (watchlist) affected...