Newbie question about the Less than Operator

I am trying to conditionally process using <xsl:if>.
But I can't find a way to use the less than operator.

for example, this seems to work,

<xsl:if test="($sectioncount = $unitcount2)">

but I want to do

<xsl:if test="($sectioncount < $unitcount2)">

(or something like it).

However, if I try this, XT says "character not allowed."

I guess that I can't use < in this manner, but I can't find any
references to alternative operators.

Thanks for any help
Peter


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