This is normally done using a delay line like in SECAM (the result is called PAL D or PAL Delay-Line, sometimes interpreted as DeLuxe), but can be accomplished "visually" in cheap TV sets using PAL-S (PAL simple) decoders.
Detta görs normalt genom att använda en fördröjningslinje likt i SECAM (resultatet kallas PAL DL eller PAL Delay Line, ibland tolkat som DeLuxe), men kan bli "visuellt" utfört i billiga TV-apparater (PAL Standard).