warn about botched .Xr ordering and punctuation below SEE ALSO;

inspired by mdoclint(1)

1 files changed, 2 insertions, 0 deletions

diff --git a/read.c b/read.c
index 2b39d57b..b19059ed 100644
--- a/read.c
+++ b/read.c
@@ -117,6 +117,8 @@ static	const char * const	mandocerrs[MANDOCERR_MAX] = {
 	"sections out of conventional order",
 	"duplicate section title",
 	"unexpected section",
+	"unusual Xr order",
+	"unusual Xr punctuation",
 	"AUTHORS section without An macro",
 
 	/* related to macros and nesting */