By default, ISODRAFT takes the item code from the SPCOM name. If the user requires different item codes for different clients, the user can set them in the Catalogue database as User-defined Attributes (UDAs) of the SPCOM. UDAs are described in the LEXICON Command Reference Manual. It is also possible to derive the item code for Supports from a Standard Text Attribute, Text UDA or Property of the ATTA itself rather than from its SPCOM. Refer to ISODRAFT command ITEMCODE for details of how to display the item codes.