Adds a role, if it does not exist.

Returns whether the author of the supplied post has the specified capability.

Returns whether the current user has the specified capability.

Returns whether the current user has the specified capability for a given site.

Retrieves role object.

Retrieves a list of super admins.

Grants Super Admin privileges.

Determines whether user is a site admin.

Maps a capability to the primitive capabilities required of the given user to satisfy the capability being checked.

Removes a role, if it exists.