1 files changed, 7 insertions, 0 deletions
diff --git a/mandoc.1 b/mandoc.1
index c8ed310f..65616272 100644
--- a/mandoc.1
+++ b/mandoc.1
@@ -1147,6 +1147,13 @@ macro is immediately followed by an
 .Ic \&Re
 macro on the next input line.
 Such an empty block does not produce any output.
+.It Sy "missing section argument"
+.Pq mdoc
+An
+.Ic \&Xr
+macro lacks its second, section number argument.
+The first argument, i.e. the name, is printed, but without subsequent
+parantheses.
 .It Sy "missing -std argument, adding it"
 .Pq mdoc
 An