Command: where
  
Syntax: 
  include file.e
  i = where(fn)
  
Description: 
  This function returns the current byte position in the file fn.
  This position is updated by reads, writes and seeks on the file.
  It is the place in the file where the next byte will be read 
  from, or written to.
  
See Also: 
  seek, open
  
