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use strict;
use warnings;
...
}
demo();
exit(0);

#option 1
  ----------------------------------------·······
...
 |  Option 2
 |  s1='Hi Thing One*Bye Thing One' s2='Hi Thing Two*Bye Thing Two'
  --------------------------------------------------------------------
+---·······

option 1

...
>perl -v

This is perl, v5.8.8 built for MSWin32-x86-multi-thread