The present invention describes systems and method for driving wordlines of memory devices. The optical apparatus comprises a first memory storing a default setting data set for controlling functions of the apparatus and a second memory storing a user setting data set for controlling the functions. The database server system maintains a catalog of drilling rigs available to potential leassees via their respective client devices, comprising information on the drilling rigs available for lease. The address field is used to correlate to an output field that includes a stuffed data portion and a carryover segment portion.