Wolfgang Winkler is right, the
<master>
(and
<property>
) tags should get translated, too. The complete slave page from the demo should translate into this:
set __adp_output ""
set __adp_master [template::util::url_to_file "master" "$__adp_stub"]
set __adp_properties(title) "My Page"
append __adp_output "
<p>This is my page.</p>
"
set __adp_output
Your exact formatting might differ a bit, because this is from the demo page in package acs_templating under ACS 4.2, but the templating system should behave essentially the same. (I take it that you're using the standalone ATS.)