freeswitch/conf/sbc/freeswitch.xml

<document type="freeswitch/xml">
  <!--#comment 
      All comments starting with #command will be preprocessed and never sent to the xml parser
      Valid instructions:
      #include ==> Include another file to this exact point
                   (partial xml should be encased in <include></include> tags)
      #set     ==> Set a global variable (can be expanded during preprocessing with $$ variables)
                   (note the double $$ which denotes preprocessor variables)
      #comment ==> A general comment such as this
      
      The preprocessor will compile the full xml document to ${prefix}/log/freeswitch.xml.fsxml
      Don't modify it while freeswitch is running cos it is mem mapped in most cases =D
      
      The same can be achieved with the <X-PRE-PROCESS> tag where the attrs 'cmd' and 'data' are
      parsed in the same way.
  -->

  <X-PRE-PROCESS cmd="include" data="vars.xml"/>

  <section name="configuration" description="Various Configuration">
    <X-PRE-PROCESS cmd="include" data="autoload_configs/*.xml"/>
  </section>
  
  <section name="dialplan" description="Regex/XML Dialplan">
    <X-PRE-PROCESS cmd="include" data="dialplan/*.xml"/>
  </section>

</document>