Visual snippets view: visual snippet editor
This area shows a categorized view of all of the existing
snippets that are available.
The list of snippets include those in the product's standard
library 
, as well as any existing custom user-defined snippets 
. To use one of these snippets, expand the appropriate category,
select the snippet, and then drag it to the location in your composition
where you want it to appear. To launch a user-defined snippet in the
editor, simply double-click it in the Visual Snippet view.