'Twas blind but...
Where in Eclipse do I do I add a Template Variable?

I was thinking of adding a few template variables, aka those
things that have ${...} that result in dynamic substitution when
Java code is generated.   I was thinking of starting out with baby steps
and something fixed like ${author} or maybe ${copyright} so that
I can use them in code generation.

Window | Java | Code Generation

Several places in the docs discuss:

"You can insert your own template variables, which then evaluate to the name of
the variable itself. You must, however, make sure that the name does not
conflict with the pre-defined template variable names in the specific context."
  -- Java Development Users Guide On-line Help: Writing your own templates
http://127.0.0.1:1574/help/index.jsp?tab=links&contextId=org.eclipse.jdt.ui.edit
_template_dialog_context&topic=%2Forg.eclipse.jdt.doc.user%2Fconcepts%2Fctemplat
es.htm

I thought

Window | Java | Editor | Templates
might eventually lead me to something, but New | insert variable just gives me
the current list.

Where is it?
Is this a PDE Function?

-Paul