feedback from Hans

@@ -874,10 +874,12 @@
 The
 .Sx OP
 macro is part of the extended
 .Nm
 macro set, and may not be portable to non-GNU troff implementations.
+.Sh INTERFACE STABILITY
+.Nm "Obsolete Committed" .
 .Sh SEE ALSO
 .Xr man 1 ,
 .Xr mandoc 1 ,
 .Xr eqn 5 ,
 .Xr mandoc_char 5 ,