turned off. The driver will prune options, removing those that are
turned off by some later option. This pruning is not done for options
with @code{Joined} or @code{JoinedOrMissing} properties, unless the
-options have either @code{RejectNegative} property or the @code{Negative}
-property mentions an option other than itself.
+options have both the @code{RejectNegative} property and the @code{Negative}
+property mentions itself.
As a consequence, if you have a group of mutually-exclusive
options, their @code{Negative} properties should form a circular chain.