-- `var_*`: Any argument with a name starting with ``var_`` is transmitted to the template. For instance, if directive has argument ``var_foo=bar``, then the template will have a variable named ``foo``, and ``<TMPL_VAR FOO>`` will be replaced by ``bar``.
+- `var_*`: Any argument with a name starting with ``var_`` is transmitted to the command and template. For instance, if directive has argument ``var_foo=bar``, then string ``%{foo}s`` in the command will be replaced by ``bar``, and the template will have a variable named ``foo``, and ``<TMPL_VAR FOO>`` will be replaced by ``bar``.