SUBROUTINE ERASE
C TO ERASE THE SCREEN OF THE TEKTRONIX 4010
C ALPHA MODE IS SET ON ENTERING
C FORTRAN II
S	CLA CLL
S	TAD (237	/ US
S	JMS CHOUT	/ TO ALPHA MODE
S	TAD (233	/ ESCAPE
S	JMS CHOUT
S	TAD (14		/ FF,^L,214
S	JMS CHOUT
	RETURN
SCHOUT,	0		/ SEND IT
SX,	TSF
S	JMP X
S	TLS
S	CLA
S	JMP I CHOUT
	END