For the purposes of this section, functions are those that support policing at the national and regional organisational and operational level, and all functions within the four Welsh police forces.
At ddibenion yr adran hon, swyddogaethau yw'r rhai sy'n cefnogi plismona ar lefel sefydliadol a gweithredol genedlaethol a rhanbarthol, a'r holl swyddogaethau o fewn pedwar heddlu Cymru.