\
interfootnotelinepenalty
— the larger it is, the less willing
LaTeX is to split footnotes.
Setting
\interfootnotelinepenalty=10000
inhibits split footnotes altogether, which will cause ‘Underfull
\
vbox
’ messages unless you also specify \
raggedbottom
. The
default value of the penalty is 100
, which is rather mild.
\
enlargethispage
changes the size of the current page by
its argument (for example, you might say
\
enlargethispage{\
baselineskip
}
to add a single line
to the page, but you can use any ordinary TeX length such as
15mm
or -20pt
as argument). Reducing the size of
the current page could force the offending text to the next page;
increasing the size of the page may allow the footnote to be included
in its entirety. It may be necessary to change the size of more than
one page.
The fnbreak package detects (and generates warnings about)
split footnotes.
This question on the Web: http://www.tex.ac.uk/cgi-bin/texfaq2html?label=splitfoot