PRIVATE_FRIEND = 0x0001
PRIVATE_GROUP = 0x0002
PRIVATE_DISCUSS = 0x0004
PRIVATE_OTHER = 0x0008
PRIVATE = 0x000F
DISCUSS = 0x00F0
GROUP_MEMBER = 0x0100
GROUP_ADMIN = 0x0200
GROUP_OWNER = 0x0400
GROUP = 0x0F00
SUPERUSER = 0xF000
EVERYONE = 0xFFFF