Referring to terms explained in other manuals, always use .Xr.

Otherwise, hyperlinks can't be produced and people will likely
miss the additional information available.
Suggested by deraadt@.

1 files changed, 2 insertions, 2 deletions

diff --git a/mdoc.7 b/mdoc.7
index 9abd7e94..a8c83703 100644
--- a/mdoc.7
+++ b/mdoc.7
@@ -1871,9 +1871,9 @@ Examples:
 \&.Fn funcname
 .Ed
 .Pp
-When referring to a function documented in another manual page,
+When referring to a function documented in another manual page, use
 .Sx \&Xr
-is usually preferable.
+instead.
 See also
 .Sx MANUAL STRUCTURE
 and