Index: lib/libc/sys/open.2
===================================================================
--- lib/libc/sys/open.2
+++ lib/libc/sys/open.2
@@ -503,6 +503,21 @@
 .Fn openat
 function was introduced in
 .Fx 8.0 .
+.Sh STANDARDS
+These functions are specified by
+.St -p1003.1-2008 .
+This implementation fails with
+.Bq Er EMLINK
+if
+.Dv O_NOFOLLOW
+is specified and the target is a symbolic link
+instead of the
+.Bq Er ELOOP
+specified by
+.Tn POSIX ,
+so that the case of too many symbolic links while translating the non-final
+components of the pathname can be distinguished from the case of a symbolic
+link in the final component of the pathname.
 .Sh BUGS
 The Open Group Extended API Set 2 specification requires that the test
 for whether