Legend (in order): deleted text, inserted text, ▶ block move mark, moved block, single character changes, highlighted moved block and ◀ block mark, and ambiguous insertion aligned to line.
wikEdDiff is a user script that provides an improved and easier to read diff view for comparing article versions on Wikipedia and other MediaWiki installations. wikEdDiff has also been integrated into wikEd, a full-featured JavaScript in-browser editor. wikEdDiff is based on the wikEd diff library. wikEdDiff is also a demo and technology preview for a possible integration of this diff style into the official Wikipedia software.