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The Indexer Service indexes the metadata store to support the Search Service.

The CRS Conversion Service provides spatial reference conversions for coordinates. Coordinates are represented by an array of 3D points.

The CRS Catalog Service enables end-users to make CRS selections, search for CRSs given a number of constraints, download of the entire catalog for local caching, and access to various sub-sets of the catalog.

The Search Service supports full-text search on string fields, range queries on date, numeric or string fields, along with geo-spatial search.

The Unit Service provides dimension/measurement and unit definitions. Given two unit definitions, the service also offers conversion parameters in two different parameterizations.