-b  Edit binary files
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    tde -b tde.exe
    tde -b80 tde.exe

    The record size varies among the machines, so TDE needs to handle various
    fixed record formats.  The default record length for binary files is 64.
    The default record size may be overridden on the command line with the /b
    switch.  Just add the size of the desired fixed length record to 
    the /b, e.g.

    tde -b128 nmr.dat
    tde -b80  hplc.dat
    tde -b54  rs232.dat