1 files changed, 7 insertions, 0 deletions
diff --git a/mdoc.7 b/mdoc.7
index c9dedc70..b886028a 100644
--- a/mdoc.7
+++ b/mdoc.7
@@ -1927,7 +1927,14 @@ and
 .Sx \&Va .
 .
 .Ss \&Xc
+Close a scope opened by
+.Sx \&Xo .
+.
 .Ss \&Xo
+Open an extension scope.  This macro originally existed to extend the
+9-argument limit of troff; since this limit has been lifted, the macro
+has been deprecated.
+.
 .Ss \&Xr
 Link to another manual
 .Pq Qq cross-reference .