Ted, Avram's point is correct. The IPPCP working group felt that 6 bits was sufficient for the transform ID. The DOI document should reflect this. Thanks, --Naganand ----------------------------------------------------------------- Naganand Doraswamy (978)916-1323 (O) Bay Architecture Lab (978)916-0620 (Fax) 3 Federal St, Mail Stop BL3-03 Billerica, MA 01821