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  1. or download this
    * level 1
** level 2
*** level 3
  2. or download this
    # level 1
## level 2
### level 3
#3 restart numbering from 3
  3. or download this
    [col1][col2][col3]
[col1][col2][col3]
  4. or download this
    use strict;
my $text=qq|
...
    $str=~s/[\r\n\s\t]+$//s;
    return $str;
    }