alt.use — Always use alt to display equations
<xsl:param name="alt.use" select="0"/>
When an (informal) equation contains both alt and
another element (graphic, etc.), and when
tex.math.in.alt is not set to 'latex', the alt element
is not used to display the equation since it is considered as a fallback
element. Set alt.use to force the use of
alt as default rendering element even when
tex.math.in.alt is not set to 'latex'.