Synopsis

<xsl:template match="keycombo">
<xsl:variable name="action" select="@action"/>
<xsl:variable name="joinchar">
			<xsl:choose>
			<xsl:when test="$action='seq'"><xsl:text> </xsl:text></xsl:when>
			<xsl:when test="$action='simul'">+</xsl:when>
			<xsl:when test="$action='press'">--</xsl:when>
			<xsl:when test="$action='click'">--</xsl:when>
			<xsl:when test="$action='double-click'">--</xsl:when>
			<xsl:when test="$action='other'"/>
			<xsl:otherwise>--</xsl:otherwise>
			</xsl:choose>
		</xsl:variable>
  ...
</xsl:template>