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Users can define their own local BUFR tables to adapt ecCodes to their own needs e.g., to use a local descriptor.

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Download an example here.
This tarball contains a BUFR file which uses local descriptors as well as the definition files needed to decode the tables. 

1. Try decoding the BUFR file "ikco_217.local.bufr" using bufr_dump. This file uses a local table version (localTablesVersionNumber=66).
   Decoding should fail as ecCodes does not know about these descriptors.
2. Run the codes_info tool to find the location of the default definitions.
3. Now set ECCODES_DEFINITION_PATH to include the provided "mydefs" directory.
   E.g.
   export ECCODES_DEFINITION_PATH=`pwd`/mydefs:`codes_info -d`
4. Now see if ecCodes can decode the BUFR file.
5. Search the output of bufr_dump for the overridden unit "MyOwnUnits".
   This was added as an example of a centre defining its own parameter attributes

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