Are you referring to Attribute Value Templates? <div id="{@ID}"/> It's simply a built-in template for "xsl:value-of" result fragments to be embedded dire

Are you referring to Attribute Value Templates? <div id="{@ID}"/> It's simply a built-in template for "xsl:value-of" result fragments to be embedded directly in the literal result fragment's attribute. Call it "string interpolation", since it effectively serves the same purpose specifically for attributes in your literal markup for a given template. <div> <xsl:attribute name="id"> <xsl:value-of select="@ID"> </xsl:attribute> </div> AVT is much nicer, to my eyes, though I will use the longer notation for more complex values. And, by definition, it's standard XSL.