Sample code
DOWNLOAD "DATA.DAT",30,12345678
12345678
12345678
DOWNLOAD "TEST.BAS"
str1$ = ""
location = 0
OPEN "DATA.DAT",0
READ 0,str1$
location = LOC(0)
CLOSE 0
SIZE 4,1
GAP 0,0
CLS
TEXT 10,10,"3",0,1,1,"str1$: "+str1$
TEXT 10,60,"3",0,1,1,"Location:"+STR$(location)
PRINT 1
EOP
TEST