GOV.WALES uses cookies which are essential for the site to work. Non-essential cookies are also used to tailor and improve services. By continuing to use this site, you agree to our use of cookies.
Notes: Defnyddir y ffurf "tudalen gartref" mewn rhai cyd-destunau, ond argymhellir "hafan" oni bai bod rheswm penodol dros ddefnyddio'r trosiad uniongyrchol.