can one pass a parameter when opening an xml file?

[Eric Taylor <Eric.Taylor@xxxxxxxxxxxx>]

Perhaps just a bizarre idea (novices are good on this front), but is it
possible to add a parameter when opening an xml file so that I can do
something different in the XSL depending on what the parameter is? e.g.
filename.xml A vs. filename.xml B and then in the XSL do something like
<xsl:if parameter1="A">...<xsl:if> <xsl:if parameter1="B">...<xsl:if>


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