<tmpl_if expr="directory_exists('t')">OK</tmpl_if>
<tmpl_var expr="commify(2000)">
<tmpl_unless expr="nada()">nada worked</tmpl_unless>
<tmpl_if expr="directory_exists('t')">OK</tmpl_if>
<tmpl_var expr="commify(2000)">
<tmpl_unless expr="nada()">nada worked</tmpl_unless>