The core elements of the project requirements have to be delivered by local authorities, for example the national logo and basic information details such as name, photo, issuing body.
Rhaid i awdurdodau lleol gyflwyno elfennau craidd gofynion y prosiect, er enghraifft y logo cenedlaethol a manylion gwybodaeth sylfaenol megis enw, llun, corff cyhoeddi.