From: muta...@gmail.com   
      
   On Sunday, October 31, 2021 at 10:05:12 AM UTC+11, muta...@gmail.com wrote:   
      
   > I'm now thinking that my pseudo-BIOS which exports fread etc   
   > to the OS, should be using the MVS flavor of the C library, which   
   > is focused on an expectation that the underlying system will   
   > give you a block, and you will be told the size of that block, and   
   > the underlying system does not provide a facility to keep track of   
   > a byte offset within that block for you.   
   >   
   > As opposed to a C library that can make use of a seek() syscall   
   > that will position on byte offset 3 or whatever in a file for you.   
   >   
   > I think that is the concept I have been missing.   
      
   Is there existing terminology for this? Block devices versus   
   character streams perhaps?   
      
   Thanks. Paul.   
      
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