p4raw-id: //depot/cfgperl@3054
=head2 pack() format modifier '_' supported
-The new format type modifer '_' is useful for packing and unpacking
+The new format type modifer '!' is useful for packing and unpacking
native shorts, ints, and longs. See L<perlfunc/"pack">.
=head2 $^X variables may now have names longer than one character