Right now if you turn a <!--V template tag into a ${v tag, you have to remember to take away the single quotes or RIFE will treat them as part of the value name.

${v 'foo'} should be equivalent to ${v foo} (or ${v "foo"} for that matter.)

Ideally the quotes should be optional on the <!--V and [!V tags, but at the very least they should be ignored if present on ${v tags. That will help people keep their templates internally consistent. (<r:v> is the odd man out, but its existing syntax is pretty much mandatory.)