p4raw-id: //depot/perl@22189
multi-threaded application. The C<unique> attribute does nothing in
all other environments.
-Warning: the current implementaion of this attribute operates on the
+Warning: the current implementation of this attribute operates on the
typeglob associated with the variable; this means that C<our $x : unique>
also has the effect of C<our @x : unique; our %x : unique>. This may be
subject to change.