// system.ii

/**
 * Abort execution of the program.  The process
 * it is running in will return abnormally.
 */
abort()

/**
 * Turn on (or off) debugging in the Iota standard library.
 */
debug(on:bool)

/**
 * Terminate execution of the program.  The process
 * it is running in will return _code_.
 */
exit(code:int)

/** 
 * Execute _command_ using the OS's command interpreter.
 * The return value is system dependent.
 */
system(command:string):int

/**
 * Return the number of seconds elapsed since midnight 
 * (00:00:00), January 1, 1970, coordinated universal time, 
 * according to the system clock. 
 */
time():int