lass="mdescRight">Associates a cd key with a user, such that the cd key cannot be used again. If Client_Login() is called with check cd key as true, then this table will be checked to make sure UserCDKey() was previously called with this user and a valid key. If this user is already associated with a CD Key, add the new key, and use the most recent key. All CD Key usage should be logged in a separate table, including the date used and result.  <a href="structRakNet_1_1CDKey__Use.html#details">More...</a><br