fop/test/xml/bbo1b1.xml

<test  xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:svg="http://www.w3.org/2000/svg">
<data>

<fo:block>
This file covers the use of keeps, breaks, orphans and widows. These are items that effect the page breaking.
</fo:block>

<fo:block space-before.optimum="660pt" break-before="page" break-after="page">
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</fo:block>

<fo:block keep-together="always" space-before.optimum="660pt" break-after="page">
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</fo:block>

<fo:block widows="4" space-before.optimum="660pt" break-after="page">
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</fo:block>

</data>
</test>