The Defect Register contains a list of defects, opened and resolved.

Defects numbered 001 to 074 apply to the 1st edition only and are not documented here; for these 
see Version 9 of the ImplementorÕs Guide.

Defects numbered 075Š156. 158, 160, 161, 165, 168, 171, 172, 174, and 175 apply to the 2nd 
edition only and are not documented here; for these see Version 14 of the ImplementorÕs Guide.

The third edition (1997 / 1998) is identified by the mark 3rd. The 4th edition (2000 for X.509|9594-
8 and 2001 for all others) is identified by the mark 4th.