markup after score, keep on the same page

[Nils]

Hello,

I plan to use a markup for subtext ("melody by xy, modified in 1865 in the 
version of publisher z" etc.) , after score. This will be either used in a 
compilation of movements or as part of a lilypond-book/latex file.

\score {
...
}

\markuplines {
  \wordwrap-lines {
    ...
  }
}


I want to make sure that the subtext is never on the next page alone, there 
should be always at least one staff directly above it.
Does Lilypond take care of that automatically or do I have to enforce it 
somehow?

Nils