identify clearly what those lessons are both within and between agencies, how and within what timescales they will be acted on, and what is expected to change as a result
b) nodi'n glir beth yw'r gwersi hynny o fewn a rhwng asiantaethau, sut ac o fewn pa amserlenni y byddant yn cael eu gweithredu arnynt, a'r hyn y disgwylir iddo newid o ganlyniad