Most important change seems to be the switch from a canvas based renderer to a DOM based renderer. From what I've seen ACE feels a lot faster than Bespin did.

Most important change seems to be the switch from a canvas based renderer to a DOM based renderer. From what I've seen ACE feels a lot faster than Bespin did. I've been wondering if it would be possible to build a WYSIWYG HTML editor on top of their DOM based renderer ala Google Doc's editor. ContentEditable based editors are a real pain to work with due to all the quirky browser behavior that comes with contenteditable. Would be great to have an alternative...