while (my $line = <MGF>)
{   my $si = index( $line, 'TITLE=' );          ## Find start of 'TITLE=' string from beginning
    if ( $si >= 0 )
    {   my $sj = index( $line, "\n", $si + 5 ); ## Get data after 'TITLE='
        if ( $sj > $sj ) { $TI = substr( $line, $si+6, $sj-($si+6) ); }
    }
  . . .
}