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  1. or download this
    use strict;
use warnings;
  2. or download this
    
Variable "@imgs" will not stay shared at par.pl line 17 (#1)
  3. or download this
    C:\TEMP>perl -Mdiagnostics par.pl
perl -Mdiagnostics par.pl
...
    reference variables in outer subroutines are called or referenced,
+ they
    are automatically rebound to the current values of such variables.
  4. or download this
    use strict;
use warnings;
...

map {parsedocument($_) } @ARGV;