From 1c585c2cc2404281311525dd26a80c8935f6332d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sigrid=20Solveig=20Hafl=C3=ADnud=C3=B3ttir?=
 <sigrid@ftrv.se>
Date: Thu, 14 Jul 2022 21:12:37 +0000
Subject: [PATCH] sam(1): clarify "<rio>" works on dot just like "look"

---
 sys/man/1/sam | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sys/man/1/sam b/sys/man/1/sam
index f107b3c79..e197c0c4c 100644
--- a/sys/man/1/sam
+++ b/sys/man/1/sam
@@ -835,8 +835,10 @@ used.
 The snarf buffer is unaffected.
 .TP
 .B <rio>
-Exchange snarf buffers with
+Exchange dot with snarf buffer of
 .IR rio .
+If dot is the null string, the text in the snarf buffer is
+used.
 .TP
 .BI / regexp
 Search forward for the next match of the last regular expression