Policies and procedures can prevent disabled people from participating fully in education, the workplace and the wider community, whether or not that is their intention.
Gall polisïau a gweithdrefnau atal pobl anabl rhag cymryd rhan lawn mewn addysg, y gweithle a'r gymuned ehangach, p'un a yw hynny'n fwriad ganddynt ai peidio.