> [Sidenote: if this proposal to collapse \paper and \alyout does make
> sense, then we'll have to decide what to do with the fact that there's
> a second, equally important use for \layout blocks, which is the
> overriding of context attributes ... which is a wholly separate thing
> from making the different settings talked about in this thread, as
> described in 9.2.6. This sort of thing:
>
> \layout {
> ...
> \context {
> \Staff
>
> \set fontSize = #-2
> \override Stem #'thickness = #4.0
> \remove "Time_signature_engraver"
> }
> }
>
\layout has another function, although it may be a special case of one
of its other uses. If a \score block contains a \midi block the
\layout block is needed if PDF output is also desired.