Forcing a page break in markup

[Geoff Horton]

It would be really handy to be able to insert page breaks in the
middle of markups, or at the very least, in between \markup blocks.
The \pageBreak command only works within a score as far as I can tell,
and I'm not excited about dumping a ton of Scheme code into my file,
though I can do that if I must. Must I? If so, is this something that
could be added as a future feature?

Geoff