>> Why does the `NonMusicalPaperColumn` grob have a width of 0.5
>> units? Where it is defined?
>
> Are you referring to the blue arrow from the second-to-last
> non-musical column to the last rest? That's not a width, it's the
> [ideal] distance to the last rest's musical column.
Yes, it was sloppily formulated, sorry.
> Also, why would non-musical columns have no width in general? Since
> they're containers, is it not logical for them to have the same
> width as the set of grobs they contain?
I fully agree. However, what I don't understand is why a zero-width
non-musical paper column has a non-zero ideal spring distance.
Additionally, this 0.5 value is hard-coded and undocumented,
apparently present in the code since the very beginning.
Werner
