> Since `@part` is outside of the sectioning hierarchy I suggest to
> not indent it at all, see the second attached image; doing so has
> the additional bonus that it sticks out more prominently – right
> now, because it uses the same font and size as ToC entries for
> `@chapter`, it can be easily missed. I could even imagine to use a
> slightly increased font size for the ToC entry.
I played around a bit more, and I think it looks good if the vertical
space right before the part entry gets increased a bit, see attached
image.
Werner
