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ZBasic System Library 6 ZX Microcontroller Family Randomize() initialize the random number generator ResetProcessor() reset the CPU Rnd() retrieve the next random number SerialNumber() retrieve the system software serial number SetJmp() prepare for a non-local Goto (e.g. exception handling) SizeOf() determine the size of a data item SizeOfU() determine the size of a data item System.DeviceID() retrieve the identification characters for the device UBound() determine the upper bound of an array WatchDog() reset the watchdog timer ZXCmdMode() activate the “command mode” (for downloading)