Select only the NAME of each ATOM:
<xsl:template match="ATOM">
<xsl:apply-templates select="NAME"/>
</xsl:template>
The select attribute is pretty much the same for
xsl:value-of and xsl:apply-templates.
The select attribute contains an XPath expression relative to the currently matched node.
A raw element name is an XPath expression that selects children of the currently matched node.