After 2017-12-23     <<< GDMP >>>

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2019-02-09  Programs 'plmap', 'plmapc', 'plmapcl', 'plmapcs',
             'plmapg', 'plmapl', 'plmaps', 'shade', 'xplmap', 'xplmapc',
             and 'xplmapcs' were updated,
             so as to improve the automatic selection of ScaleBar size.

2019-12-10  Patch file "gdmp_201912.patch" for above update was generated.

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2020-11-13  Program 'gflat' was added.
             This program is used to generate a standard GRID format file
             of flat (horizontal plane) surface data.

2020-11-13  Program 'plxsec' was added.
             This program is used to draw a cross-section graph of GRID data
             along an arbitrary section line on an A4 sheet, with Index map
             (color-graded contour map).

2020-11-13  @mkall script was updated
              to compile new programs 'gflat' and 'plxsec'.

2020-11-16  Patch file "gdmp_202011.patch" was generated for above updates.

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2020-11-21  Program 'plxsec' was further updated.

2021-08-11  Program 'plmapl' and 'plmapcl' were updated,
             so as to improve the graphic output accuracy.

2022-01-23  Patch file "gdmp_202201.patch" was generated for above updates.

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