CURSOR FUNCTIONS:

SETCUR(XPOS,YPOS) TURNS ON THE CURSOR AT (XPOS,YPOS)
CLRCUR		  TURNS OFF THE CURSOR
RDCUR(XPOS,YPOS)  READ THE POSITION OF THE CURSOR (XPOS & YPOS ARE INTEGERS)
SLEEP(N)	  SLEEPS FOR N SECONDS WHERE N IS AN INTEGER
		  (IF N=0 SLEEPS FOR 1/60 SECOND)

ALL FOUR ARE CALLABLE FROM FORTRAN AND ARE KEPT ON 'CURSOR.REL[MUS,TVR]`.