[Groff] Unable To Access Glyphs From Zapf Dingbats

[Henry McGilton]

I have on and off been using both the Heirloom Project and now the Mac OS X 
Darwin 
Groff suite of tools.  Pretty much everything works fine except for one thing:

I have been completely unable to access glyphs from the Zapf Dingbats font.  All
I get is a rectangular box that is an indicator that whatever glyph I want can 
not
be found.

I see that there is a ZapfDingbats TTF font file in /System/Library/Fonts.    I 
had
read somewhere in the documentation that I should have a ZapfDingbats font in
a .dfont format, so I created that animal and added it into my ~/Library/Fonts
directory.  

I tried using the \N’nnn’ for to try to access a character by its index from 
the encoding
vector, but that doesn’t work.

I also tried \[char a74], which should show a white square with a black 
drop-shadow.

I have had zero success in this endeavour.

Does anybody on the list have an actual, working example of how to get all the 
bits
of machinery to work for Zapf Dingbats?  

    Many Thanks,

        . . . . . . . .    Henry