1 files changed, 6 insertions, 0 deletions
diff --git a/mdoc.7 b/mdoc.7
index ba8c714b..f2c03c53 100644
--- a/mdoc.7
+++ b/mdoc.7
@@ -2169,6 +2169,12 @@ Heirloom troff, the other significant troff implementation accepting
 .Pp
 .Bl -dash -compact
 .It
+groff supports a
+.Fl file Ar filename
+argument to
+.Sx \&Bd .
+mandoc does not.
+.It
 groff behaves inconsistently when encountering
 .Pf non- Sx \&Fa
 children of