/sortlines <N>*: Sorts lines N-N of the text file, it also echoes how long the process took.

alias sortlines { 
  if ($isfile($1) && $2-3) { 
    window -h @sort
    filter -arfw $+($2,-,$3) $1 @sort
    var %x = $2, %t = $ticks 
    while (%x <= $3) { 
      write $+(-l,%x) $1 $line(@sort,%x)
      inc %x
    }
    echo -ac info * Finished sorting lines $+($2,-,$3) in $+($calc(($ticks - %t) / 1000),s!) 
    window -c @sort
  }
}