New Workflow Types

System

This bit from page 66 of the WF manual has bothered me ever since 5.0 came out, but I'm just now getting to the point that I am curious enough about it to ask other people:

Note: You can add your own custom workflow types by clicking Add New Type and entering
a new type name in the window that is displayed. The new type is added to the list
when you click OK.

The clear implication of that is that one could define workflows for commands other than tt_data, submit, new_job, etc., but I don't see how that could be the case, as there doesn't seem to be any place to configure a new command to trigger the evaluation of available_templates.ipl (and, by extension, available_templates.cfg). Does anyone know what the author of the manual intended by that?