1.CDO> SET CONTEXT
      CDO> DEFINE COLLECTION REGIONAL_SALES
      cont> DESCRIPTION IS "COLLECTION IS REGION_5".
      CDO>  RESERVE COLLECTION REGIONAL_SALES
      CDO>  CHANGE COLLECTION REGIONAL_SALES
      cont>   DESCRIPTION IS "COLLECTION DIRECTORY IS WEST_COAST".
      CDO>  REPLACE COLLECTION REGIONAL_SALES

      In this example, the CHANGE COLLECTION command modifies the
      description clause of the REGIONAL_SALES collection.

    2.CDO>  RESERVE COLLECTION COMPILER_C
      CDO>  CHANGE COLLECTION COMPILER_C
      cont>   NODESCRIPTION
      cont>   AUDIT IS "PHASE REVIEW".
      CDO>  REPLACE COLLECTION COMPILER_C

      In this example, the CHANGE COLLECTION command removes the
      description clause and adds audit text.