document tog tree search
diff --git a/tog/tog.1 b/tog/tog.1
index 2263349..5f0b98d 100644
--- a/tog/tog.1
+++ b/tog/tog.1
@@ -237,6 +237,16 @@ Move back to the parent directory.
Show object IDs for all objects displayed in the
.Cm tree
view.
+.It Cm /
+Prompt for a search pattern and start searching for matching tree entries.
+The search pattern is an extended regular expression which is matched
+against the tree entry's name.
+Regular expression syntax is documented in
+.Xr re_format 7 .
+.It Cm n
+Find the next tree entry which matches the current search pattern.
+.It Cm N
+Find the previous tree entry which matches the current search pattern.
.El
.Pp
The options for