schemas/
  0.3/                MPA schemas version 0.3
    mpa.xsd	      MPA domain feature and attribute types
    mpaDS.xsd	      Datasets
    NPUBDQ.xsd	      NPUBS data quality types
    combinedDS.xsd    Additional schema defining a LNDARE class added to mpaDS.xsd, for demo of MPA information in geographic context

  S100/               root directory for S100 schemas
    0.2/	      XML schemas implementing the generic S100 types version 0.2 (not official implementations)
      S100Base.xsd    base types (originally developed by UKHO)
      S100CI.xsd      Citation information types (originally developed by UKHO)
      S100DQ.xsd      Data quality stub - ISO and S100 CI imports and future generic data quality types
      S100Feature.xsd Generic S100 feature, information class, types, Also includes common types.
      S100MD.xsd      Metadata types
      S100.xsd        Collection file for the other S100 schemas

  gml/                GML 3.2.1 schemas as distributed by OGC
  iso/                ISO schemas used by GML and MPA schemas (also distributed by OGC, for use with GML)