Brian explained:

> AFAIK, this was not intentionally omitted.


Thanks for the explanation. I knew about the keyword header file, but  
wanted to mention this because it can be confusing,

The reciprocal function, Def SetButtonTextString (which is located  
directly above fn ButtonTextString$ in the header) is bolded as a  
keyword. For a few seconds of distraction, I kept thinking I was  
typing the name wrong and until I Command-clicked on it and the Subs  
Appearance Buttons.incl header opened showing me it was recognized  
but not highlighted.

> I'd rather not add more overhead to the keywords...

You mean like parsing out a Str31 on my Quad-Core Mac Pro running at  
2.66 GHz with 8 GB of RAM? Good one!

A keyword should be a keyword, especially since it's documented as such.

Ken