A profile lists controls and subcontrols to be included, and permits parameters to be set.

Produce a web page that shows all the controls included in a profile, with their parameter values injected ('transcluded') into their points of insertion.

Subcontrols that are not explicitly included, should not be shown, unless a runtime parameter is set to show all subcontrols in included controls. Controls that are not included, should not be shown.

The HTML (web page) should have a directory or ToC to the included controls; the ToC should give visual indicators of which controls contain dynamically inserted values, which should also be highlighted inline. It does not, however, have to represent the controls in the same arrangement in which they appear in source catalog(s). It does have to be able to handle a profile that calls multiple catalogs.