Magical values, tied values, and references can be made into
constants at compile time, allowing for way cool stuff like this.
+(These error numbers aren't totally portable, alas.)
use constant E2BIG => ($! = 7);
print E2BIG, "\n"; # something like "Arg list too long"
Unlike constants in some languages, these cannot be overridden
on the command line or via environment variables.
+You can get into trouble if you use constants in a context which
+automatically quotes barewords (as is true for any subroutine call).
+For example, you can't say C<$hash{CONSTANT}> because C<CONSTANT> will
+be interpreted as a string. Use C<$hash{CONSTANT()}> or
+C<$hash{+CONSTANT}> to prevent the bareword quoting mechanism from
+kicking in. Similarly, since the C<=E<gt>> operator quotes a bareword
+immediately to its left you have to say C<CONSTANT() =E<gt> 'value'>
+instead of C<CONSTANT =E<gt> 'value'>.
+
=head1 AUTHOR
Tom Phoenix, E<lt>F<rootbeer@teleport.com>E<gt>, with help from
#=======================================================================
# Some of this stuff didn't work in version 5.003, alas.
-require 5.003_20;
+require 5.003_96;
#=======================================================================
# import() - import symbols into user's namespace