=item Ambiguous use of -%s resolved as -&%s()
(W ambiguous) You wrote something like C<-foo>, which might be the
-string C<"-foo"> (outside of C<use strict 'subs'>), or a call to the
-function C<foo>, negated. If you meant the string, just write
-C<"-foo">, and please use strict. If you meant the function call,
+string C<"-foo">, or a call to the function C<foo>, negated. If you meant
+the string, just write C<"-foo">. If you meant the function call,
write C<-foo()>.
=item '|' and '<' may not both be specified on command line