You can come close by turning the grouping text into a series of invisible characters. The characters I found as usable (depending on the font) still have some width, so you will see some whitespace before the line. The longer the whitespace you accept, the less chance for two groupings to clash and merge.
Replace everything in $crc32() with whatever you want to group by.
$puts(temp,$crc32([%releaseflags%][%releasedate%][%releasetype%][%label%][%catalognumber%][%media%][%matrix%][%__codec%]))$replace($select($add($mod($get(temp),9),1),00,01,02,10,11,12,20,21,22)$select($add($mod($div($get(temp),9),9),1),00,01,02,10,11,12,20,21,22),0,$char(8201),1,$char(8202),2,$char(8198))