Hello Chuma,

A quick observation: if you change the “unspecified” value from 'a' to undef, you can simplify this:

if($par{'margin-left'} ne 'a'){
  $actual = $par{'margin-left'}
}elsif($par{'margin-horizontal'} ne 'a'){
  $actual = $par{'margin-horizontal'}
}
else{$actual = $par{'margin'}}
[download]

to this:

$actual = $par{'margin-left'} // $par{'margin-horizontal'} // $par{'ma
+rgin'};
[download]

which is easier to comprehend as well as to type. See Logical Defined Or.

Hope that helps,