One user notes the following:
In keeping with the open source license of WebCore/KHTML, Apple has made available the source code behind the rendering part of Safari 1.3/2.0 (at http://www.opensource.apple.com/darwinsource/tarballs/other/WebCore-315.tar.gz). What is interesting is that the ChangeLog included with this release refers not only to existing Apple applications that use WebKit but also a previously unknown one, Blot.
For example:
- <rdar://problem/4039661> crash in ApplyStyleCommand::applyBlockStyle pasting contents of webpage into Mail or Blot
- Fixed: <rdar://problem/4024786> REGRESSION (Mail): "Smart paste" plain-text word into Blot leaves insertion point misplaced