(This is the second incarnation because I only previewed, and didn't post
The next incarnation of Zaphod is progressing
nicely. The move away from complicated actions ("insert character", "insert line", "split line",
Publishing the second incarnation is currently blocked by one feature I want to add, "bookmarks", that is, marked positions within the document between which the user(s) can jump around. Bookmarks are the stepping stone for a lot of interesting features and bugfixes:
I hope I find the time during the weekend to publish the second incarnation. The source code release and/or svn repository are also on my list, but a bit lower on priority.