The character encoding of the document was not declared, so the encoding was guessed from content. The character encoding needs to be declared in the Content-Type HTTP header or using a byte order mark.
Ni chyhoeddwyd amgodio nodau'r ddogfen, felly dyfalwyd yr amgodio o'r cynnwys. Mae angen datgan yr amgodio nod yn y pennawd Content-Type HTTP neu ddefnyddio marc gorchymyn beit.