DDS past semantic check

DDS past full semantic check

Dataset {

    Sequence {

        String name;

        Int32 age;

    } person;

    Structure {

        Int32 j;

        Int32 i;

        Structure {

            Int32 i;

            Float64 f[10];

        } data;

    } exp;

    Grid {

      Array:

        Float64 g[10][10][10];

      Maps:

        Float64 lat[10];

        Float64 lon[10];

        Float64 weirdness[10];

    } strange;

} data6;