Seek statement
Seek filenumber, position
The parameter filenumber is used in the open statement and must be a valid numeric expression, the parameter position is the number that indicates where the next read or write is to occur. In BlueZone Basic, position is the byte position relative to the beginning of the file.
The Seek statement sets the position in a file for the next read or write.
Example
Sub Main
   Open "TESTFILE" For Input As #1   ' Open file for reading.
   For i = 1 To 24 Step 3   ' Loop until end of file.
 
       Seek #1, i   ' Seek to byte position 
       MyChar = Input(1, #1)   ' Read next character of data.
       Print MyChar   'Print character of data
   Next i 
   Close #1   ' Close file.
End Sub