SYS	BASIC system functions
VERSION	Versions control
IN, OUT	Port input/output
PEEK, POKE	Manipulation of memory
BUZZER	Acoustic signal
SOUND, PLAY	Sound output
BATTSTAT	Battery status
WAIT	Program execution delay
TIME, SETTIME	Date and time inquiry
TIMER	Measuring times
LIGHT	Switch backlight
MODE	Accessing other applications
GETSYSVAR, SETSYSVAR	Change OWBasic settings
SYSDLG	System Dialogues
CLIPBOARD	Clipboard
POWEROFF	System power off
APOTIME%, SETAPOTIME	AutoPowerOff time
RESTART	Restart OWBasic
SYSLANG	System Language
KBDRAW, KBWAIT!	Keyboard Operations