This is an arbitrary grouping mechanism in OWB. Any first class object can be added to the collection.
createCollectionCommand =  OMBCREATE ( COLLECTION "QUOTED_STRING" [ SET 
          "setPropertiesClause" [ SET "setReferenceIconSetClause" ] | SET 
          "setReferenceIconSetClause" ] ( { "addReferenceClause" } ) )
     setPropertiesClause =  PROPERTIES "(" "propertyNameList" ")" VALUES "(" 
          "propertyValueList" ")"
     setReferenceIconSetClause =  ( REFERENCE | REF ) ICONSET "QUOTED_STRING"
     addReferenceClause =  ADD REFERENCE TO "componentRefClause"
     propertyNameList =  "UNQUOTED_STRING" { "," "UNQUOTED_STRING" }
     propertyValueList =  "propertyValue" { "," "propertyValue" }
     componentRefClause =  ( "UNQUOTED_STRING" "QUOTED_STRING" )
     propertyValue =  ( "QUOTED_STRING" | "INTEGER_LITERAL" | 
          "FLOATING_POINT_LITERAL" )
Basic properties for COLLECTION: Name: BUSINESS_NAME Type: STRING(200) Valid Values: Any valid character string in supported character set. Default: Empty string Business name of the collection Name: DESCRIPTION Type: STRING(4000) Valid Values: Any valid character string in supported character set. Default: Empty string Description of the collection