C:\Perl\perl\perlmonks>469375.pl -y zero
-y zero

C:\Perl\perl\perlmonks>469375.pl -y zero one two
-y zero one two

C:\Perl\perl\perlmonks>469375.pl -z zero one
-z zero one

C:\Perl\perl\perlmonks>469375.pl -x zero
-x zero

C:\Perl\perl\perlmonks>469375.pl -x zero one two three
-x zero one two three

C:\Perl\perl\perlmonks>469375.pl -y zero
-y zero

C:\Perl\perl\perlmonks>469375.pl -y zero alpha beta
-y zero alpha beta

C:\Perl\perl\perlmonks>469375.pl -z zero
-z zero

C:\Perl\perl\perlmonks>469375.pl -z zero last_but_not_least
-z zero last_but_not_least

C:\Perl\perl\perlmonks>469375.pl -x zero -y zero -z zero
Error: parameter '-y' not allowed with parameter '-x'
Error: parameter '-z' not allowed with parameter '-x'

(try 'C:\Perl\perl\perlmonks\469375.pl -help' for more information)

**** Error processing command line options, terminating C:\Perl\perl\perlmonks\469375.pl