Is there any way to read in large chunks of a file piece by piece? I.e. say a file consists of 16 numbers. I'd first want to read in the first 4, do some stuff to them, then load in the second 4 etc. I'm using the READ command at the moment but I don't know how to do this. The problem isn't reading in the first batch but getting it to read the second batch etc starting at the respective value, i.e. the 5th value in this over-simplified example.