Sets the file pointer position for the next read or write operation.
SEEK [#]file_number, position
file_number is the file number assigned to the file in its OPEN statement.
position is the desired record number in a random-access file or the byte offset in a binary or sequential file. It must be in the range 1 to 2,147,483,647.
OPEN "SALARY.DAT" FOR RANDOM AS #1 LEN = 80
SEEK #1, 5 'Move pointer to record 5