<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:m="http://www.w3.org/1998/Math/MathML"
- xmlns:helm="http://www.cs.unibo.it/helm"
- xmlns:xlink="http://www.w3.org/1999/xlink">
+ xmlns:helm="http://www.cs.unibo.it/helm">
<xsl:template name="out-mml-op"> <!-- outputs MML nodes for operators -->
<xsl:param name="arity"/> <!-- operator arity -->