GDP: texinfo macro for inspirational headwords

[Graham Percival]

(I'm going to split up GDP stuff between -user and -devel.  Most 
discussion items will be sent to -user only; technical issues will be 
sent to -devel)


I'd like to define a macro for the "inspirational headwords", but from 
my understanding of texinfo this isn't possible.  I'm just checking here 
in case John or Werner have a better idea.

The current command is this:
@lilypondfile[ragged-right,line-width=16\cm,staffsize=16,quote]
{pitches-headword.ly}

Ideally, I'd like to have this:
@headword{pitches-headword.ly}


Unfortunately, defining
@macro headword{TEXT}
@lilypondfile[]{\TEXT\}
@end macro

results in lilypond-book complaining that it can't find the file 
"\TEXT\".  Am I missing anything obvious?

Cheers,
- Graham