return the an TStringList containing The list of templates used by the current request

  <#for var="i" from="0" to="<#debug_templates_used.count> - 1">
    #debug_templates_used[<#i>] xmlencode=1<br />
  <#endfor>

will return for exemple

  about/about_tabs.html<br />
  about/about_us.usa.html<br />
  buttons/button_6_1_1.html<br />
  buttons/button_8_1_1.html<br />
  footers/bottombar.htmlVersions<br />