Blocked(A privacy relationship setting that prevents a person or domain from adding the user to contact lists, seeing the user's status, or sending instant messages to the user)
button grid(A rectangular group of buttons with similar functions on a point-of-sale screen); lock(To prevent users from joining a conference, whether or not they have an invitation)
Block(A permission setting that prevents a person or domain from adding the user to contact lists, seeing the user's status, or sending instant messages to the user)
