It's proposed to add facilities to allow the storage and manipulation of tiddler data within TiddlyWiki:
arbitrary metadata items against any tiddler
- support for 'lazy loading' where the header of a tiddler is provided in the HTML file and the body is retrieved from a server on demand
- support for multiple versions of the body of a tiddler
support for embedded fields within tiddlers
- switching to the <PRE> element for value storage so as to be able to preserve white space properly
Struck-out entries were implemented for 2.1.
See this thread for some discussion of the proposed implementation:
http://groups.google.com/group/TiddlyWikiDev/browse_thread/thread/ab28e78c6c9ca320/5ff7566919d63f6a?q=emd&rnum=4#5ff7566919d63f6a