Catalog' which has the same naming scheme as all other Z* objects.
This won't affect the searing based on meta_type, just the thing
that's listed in the drop down list.

driven.

display of the top frame.

tag, rather than the singleton.  Also merged in the "add text" so it makes
more sense.  Lastly, made sure that if there's only one thing to be added
that its metatype shows up in the add button.