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 />