How to define multiple pieces per page

[Helge Kruse]

Hello,

I know I can place each piece as a bookpart in a book. This allows to 
define fancy headers. I can also just write some \scores one after the 
other, but I am missing the section headers between them.

But how do I write pieces like the tacet piece I in 
http://erato.uvt.nl/files/imglnks/usimg/c/c1/IMSLP38182-PMLP09176-Borodin-Sym2.Harp.pdf. 
This should not occupy a page. Instead I would like to remember the 
player that there is nothing to do.

What is the name of the headlines "SCHERZO", "FINALE" and how can I 
implement this with Lilypond?

Regards
Helge