se/SE/stuff/dita-ot-2.3.3/plugins/org.dita.xhtml/xsl/xslhtml/conceptdisplay.xsl

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0"
    xmlns:related-links="http://dita-ot.sourceforge.net/ns/200709/related-links"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    exclude-result-prefixes="related-links xs">

    <!-- Concepts have their own group. -->
    <xsl:template match="*[contains(@class, ' topic/link ')][@type='concept']" mode="related-links:get-group"
                  name="related-links:group.concept"
                  as="xs:string">
        <xsl:text>concept</xsl:text>
    </xsl:template>
    
    <!-- Priority of concept group. -->
    <xsl:template match="*[contains(@class, ' topic/link ')][@type='concept']" mode="related-links:get-group-priority"
                  name="related-links:group-priority.concept"
                  as="xs:integer">
        <xsl:sequence select="3"/>
    </xsl:template>
    
    <!-- Wrapper for concept group: "Related concepts" in a <div>. -->
    <xsl:template match="*[contains(@class, ' topic/link ')][@type='concept']" mode="related-links:result-group"
                  name="related-links:result.concept" as="element()?">
        <xsl:param name="links" as="node()*"/>
        <xsl:if test="normalize-space(string-join($links, ''))">
          <linklist class="- topic/linklist " outputclass="relinfo relconcepts">
            <title class="- topic/title ">
                  <xsl:call-template name="getVariable">
                      <xsl:with-param name="id" select="'Related concepts'"/>
                  </xsl:call-template>
              </title>
              <xsl:copy-of select="$links"/>
          </linklist>
        </xsl:if>
    </xsl:template>
    
</xsl:stylesheet>