There can also be a data validation worksheet which brings together relevant checks within the spreadsheet that would otherwise be performed after the form was submitted.
Gall yna hefyd fod weithlen ddilysu data sy’n dwyn ynghyd wiriadau perthnasol o fewn y daenlen a fyddai fel arall yn cael eu gwneud wedi i’r ffurflen gael ei chyflwyno.