DIFF

        EXPERIMENTAL\DIFF [Num1 Num2]

    List the differences between 2 observation  headers  (the  data  is  not
    diff'ed). Without argument, the command compares the R and T buffers. If
    2 observation numbers are given, the corresponding entries (latest  ver-
    sion) from the current input file are compared.

    As of today, the command compares the following sections:
      - General (observation number and version ignored),
      - Position,
      - Spectroscopy,
      - Calibration,
      - Switching.
    The values are compared to all their precision. No tolerance is used.