document message "unknown architecture"

1 files changed, 6 insertions, 0 deletions

diff --git a/mandoc.1 b/mandoc.1
index afdaabe7..6ac92020 100644
--- a/mandoc.1
+++ b/mandoc.1
@@ -816,6 +816,12 @@ macro does not use CVS
 keyword substitution, but using it is conventionally expected in the
 .Ox
 base system.
+.It Sy "unknown architecture"
+.Pq mdoc , Ox , Nx
+The third argument of the
+.Ic \&Dt
+macro does not match any of the architectures this operating system
+is running on.
 .It Sy "operating system explicitly specified"
 .Pq mdoc , Ox , Nx
 The