Clarification of 'font' usage to use Gonville over Feta

[James]

Hello,

I hope this is the right list to ask this question on.

I am currently helping Graham with Doc edits and am looking at adding into 
them somewhere the instructions for Windows/Mac OS and *NIX for the music font 
Gonville (for those that don't know 
http://www.chiark.greenend.org.uk/~sgtatham/gonville/ )

The instructions to use this replacement for the feta font are simple (if 
rudimentary), but what I wanted to check is that as of 2.13.x there still is 
not a simple function along the lines of what is documented in the Notation 
Reference

Such as #'(font.name... or #(font.family... and that the examples given to 
replace font.family is really only for non-musical-glyph fonts?

This just saves me from describing an unnecessary procedure if it is simply 
pointing to a new place or new directory for the gonville music font.

I hope that does make sense.

Thanks for your time.

James