When restrictions are locked, `narrow-to-region' and `widen' can be
used only within the limits of the restrictions that were current when
-`narrowing-lock' was called, unless the lock is removed with
-\(narrowing-unlock TAG).
+`narrowing-lock' was called, unless the lock is removed by calling
+`narrowing-unlock' with TAG.
Locking restrictions should be used sparingly, after carefully
considering the potential adverse effects on the code that will be