What is the scope of template variables?

<xsl:template match="something">
    <xsl:variable name="a" select="XPathExpr"/>
    ........
    <xsl:call-template name="func1"/>
    <xsl:apply-templates select="junk"/>
    .....
</xsl:template>

<xsl:template name="func1">
    <!-- QUESTION:  Is the variable $a defined in the calling template
visible to this template? -->
</xsl:template>

<xsl:template match="junk">
    <!-- QUESTION:  Is the variable $a defined in the calling template
visible to this template? -->
</xsl:template>

<Thanks author="Shakeel Mahate"/>


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