After 2017-12-23     <<< DPAM >>>

2018-01-30  Programs 'xldam' and 'xldpn' were slightly updated,
            so as to suppress compiler WARNING (on Windows).

2018-02-13  Program 'ggrids' was updated,
            so as to improve logging file output.
            (to describe Altitude reference of Output GRID data)

2018-07-07  Programs 'xldam' and 'xldpn' were slightly modified,
            so as to fix a bug of using undefined variables.

2018-07-10  Patch file "dpam_201807.patch' for abave update was generated.

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