A number of factors should be considered right at the start, because they will impact on decisions to be taken at various stages throughout the formal consultation process.
Dylid mynd ati ar y cychwyn cyntaf i ystyried nifer o ffactorau, oherwydd bydd y materion hyn yn effeithio ar benderfyniadau a wneir yn ystod y gwahanol gamau drwy gydol y broses ymgynghori ffurfiol.