>> I very much dislike that. We use different fonts (via different
>> indexing commands) to provide a clear distinction between concepts
>> and commands, and LilyPond's clean naming schemes for properties,
>> context, engravers, etc., should additionally help a user to find
>> the stuff he or she needs.
>
> Dickson’s History of the Theory of Numbers has two non-overlapping
> indices: an Author Index and a Subject Index. Having used that book
> — and referred to both indices — literally thousands of times in my
> life, I can honestly say that if they were in a single index,
> differentiated only by fonts, it would have been a far more
> frustrating experience.
You can't compare that, since in almost all cases you know *a priori*
whether to look up an author or something else. It thus makes sense
to have a separate index for authors not overlapping with the general
index (and the 'LaTeX companion' has such a separate index).
Werner