Summary

An Amendment 2 is provided for ITU-T Rec. X.680 | ISO/IEC 8824-1 in order to align it with changes made to ITU-T Rec. X.660 | ISO/IEC 9834-1.  The changes relate to relaxation of the rules for the use of identifiers in object identifiers, and the provision of synonymous identifiers for top-level arcs.