A term used to describe the method by which a recipe is processed to result in one of the following:

• On a GET request: A list of tiddlers from one or more filtered bags, wherein a tiddler with the same name found later in the processing will replace the earlier with the same name.
• On a PUT request: A bag to which this tiddler can be saved after processing the recipe in reverse, choosing the first bag+filter combination that will allow the tiddler into the bag.

This cascade process is similar to CSS inheritance or the way in which shadow tiddlers can be overridden in TiddlyWiki.