Note that when needed to, the setup assistant also creates a custom XSLT stylesheet which is referenced by the w2x options file.

For example, in the case depicted in the above screenshot, the setup assistant creates both topic.w2x and topic_scripts/custom_transform.xslt. Excerpts from topic.w2x:

# AUTOMATICALLY CREATED BY w2x-app SETUP ASSISTANT. PLEASE DO NOT EDIT BY HAND!
###outputFormat topic
###option transform.topic-type concept
...
-o topic
-p transform.topic-type concept
...
-t topic_scripts/custom_transform.xslt

Excerpts from topic_scripts/custom_transform.xslt:

<xsl:stylesheet version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:h="http://www.w3.org/1999/xhtml"
  exclude-result-prefixes="h">

<xsl:import href="w2x:xslt/topic.xslt"/>

<xsl:template match="h:span[@class='c-FilePath']">
  <filepath>
    <xsl:call-template name="processCommonAttributes"/>
    <xsl:apply-templates/>
  </filepath>
</xsl:template>
...