A method for optimizing memory usage in a device having a universal controlling application includes receiving into the device data for use in configuring the universal controlling application wherein the data is used to identify from within a library of command code sets stored in a memory of the device a command code set that is appropriate for use in commanding functional operations of the appliance and causing a non-identified one or more of the command code sets of the library of command code sets stored in the memory of the device to be discarded to thereby create freed space in the memory of the device.