Logically I would say that
if the plug-in does or were to support OrderLimit, then the order would be directly sent as 'limit' to the broker, where it would be subject to the usual limit order handling rules I described above.
and
If the broker API supports limit orders, this guarantees a fill price at or better than the limit.
are not the same. The usual limit behaviour should be already covered by 'Entry', at least it is explained in the manual similar to your description. But who knows.
