Facebook is providing the public with more information about what material is banned on the social network.
Its revamped community standards now include a separate section on "dangerous organisations" and give more details about what types of nudity it allows to be posted.
The US firm said it hoped the new guidelines would provide "clarity".
One of its safety advisers praised the move but said that it was "frustrating" other steps had not been taken.
Facebook says about 1.4 billion people use its service at least once a month