Quote

# classic (active by default)
<TMPL_IF foo><tmpl_var bar></TMPL_IF>

# comment (active by default)
<!-- TMPL_IF foo --><!-- TMPL_VAR bar --><!-- /TMPL_IF -->

# asp (active by default)
<%if foo%><%VAR bar%><%/if%>

# php (not active by default)
<?if foo?><?var bar?><?/if foo?>

# tt (not active by default)
[%if foo%][%var bar%][%/if foo%]