Sample code
DOWNLOAD "DATA1",20,COMPUTER
2000
12
DOWNLOAD "DATA2",16,Mouse
900
93
DOWNLOAD "DEMO.BAS"
SIZE 3,1
GAP 0,0
DIRECTION 1
I=0
Y=100
OPEN "DATA1",0
OPEN "DATA2",1
SEEK 0,0
SEEK 1,0
:Start
CLS
TEXT 10,10,"3",0,1,1,"*****READ COMMAND TEST*****"
TEXT 10,50,"3",0,1,1,"OPEN-READ DATA"+STR$(I+1)
ITEM$=""
READ I,ITEM$,P,Q
TEXT 10,Y,"2",0,1,1,ITEM$+"$"+STR$(P)
BARCODE 10,Y+25,"39",40,1,0,2,4,"PRICE*"+STR$(Q)+"="+STR$(P*Q)
Y=Y+100
PRINT 1
Y=100
IF I<=1 THEN
IF EOF(I)=1 THEN
I=I+1
GOTO Start
ELSE
GOTO Start
ENDIF
ELSE
END
ENDIF
EOP
DEMO