> While playing around with adding parts to LilyPond's Notation
> Reference, I got the attached layout in the ToC. As can be seen,
> there is a vertical gap corresponding to approx. 8 lines(!) at the
> bottom of page vi; I've never noticed such a large gap before in any
> Texinfo document.
>
> I
Right now, `@part` in the ToC is typeset with an empty box for the
sectioning number. This doesn't look correctly formatted if there are
more than 9 chapters, see the attached image.
Since `@part` is outside of the sectioning hierarchy I suggest to not
indent it at all, see the second attached i
