The functionality was improved and called QuickDiff.
You can now just click the last edited date (like "April 12, 2000"), and it will bring you to the quick-diff for the current page. It even works for very old pages, as long as there is an EditCopy version. -- CliffordAdams
Original functionality:
When a lengthy or important page shows up in RecentChanges you may wonder what change put it there. You can get a line by line list of differences. Here's how...
- Press EditText at the bottom of the page to get the text entry form for the page.
- Press EditCopy at the bottom of this page to get the backup copy's entry form.
- Scroll to the bottom of this page looking for the Differences section heading.
Wiki runs a unix diff between the two versions and puts the output, if any, in the Differences section. A page authored from only one site won't have a backup copy so you won't find an EditCopy button. In this case there is nothing to compare.
Here's an idea: could you put an <A NAME> around the Differences section, such that a script could cause my web browser to go straight to there? -- GrahamHughes