interpreter:
	tstb	lflag			/is line in buffer?
	beq	1f			/branch if not
	clrb	lflag			/reset flag
	br	2f
1:
	mov	$bline,r0
	jsr	r5,readline		/read line at terminal
2:
	jsr	r5,breakout		/break-out tokens
	jsr	r5,search		/call sub to handle command
	rts	r5			/return
