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  1. or download this
    #! /usr/bin/perl
    
    for(0..39){$i=-1+$_*.05;for(0..59){$r=$j=-2.3+$_*.05;
    $z=$i;$b=" ";for(0..255){$m=$r*$r;$n=$z*$z;if($m+$n>4)
    {$b="+";last}$z=2*$r*$z+$i;$r=$m-$n+$j}print$b}print"\n"}
    
  2. or download this
    __END__
    Output should be this:
    ...
    ++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++
    ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++