DOCBOOK-APPS: docbook fo - page breaks

[Markus Spath <mspath@arcor.de>]

hi,

is there a way to customize the docbook fo stylesheets so that page breaks are 
enforced at certain <sect1> elements - e.g. for doctype article, if less than 3 
lines of text would be displayed on the page?

i know that i can set the break.before attribute in the 
section.title.level1.properties attribute set, but this would affect all sect1 
elements.

thanks for any hints or suggestions,
markus