There are times when you might wish to retrieve a collection of tiddlers, including all their metadata and text. TiddlyWeb supports doing this when retrieving the JSON representation of a collection of tiddlers. Compare the output of the following two ~URLs:
http://tiddyspace.com/bags/system/tiddlers.json
http://tiddlyspace.com/bags/system/tiddlers.json?fat=1
The first gets everything but the text of each tiddler. The second gets everything including the text.
For the time being the {{{fat}}} parameter only works with the JSON serialization.