Basically this means that if you agree that an offence has been committed by you, then by paying the sum of money specified, no further action for the offence will be taken.
Yn y bôn, golyga hyn, os ydych yn cytuno eich bod wedi cyflawni trosedd, trwy dalu'r swm a nodwyd, ni chymerir unrhyw gamau pellach mewn perthynas â'r drosedd.