For example, these may specify the nature of the building work, hours of opening, length of time permission is granted for or the necessary assessments which accompany an application.
Er enghraifft, gall y rhain nodi natur y gwaith adeiladu, oriau agor, hyd yr amser y rhoddir caniatâd ar ei gyfer neu'r asesiadau angenrheidiol sy'n cyd-fynd â chais.