From 84fa94978e2efa081dbe3020323acdf4bb90c591 Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Tue, 31 Jan 2023 12:51:04 +0000
Subject: [PATCH] Add a docstring to action_cursor_down

---
 src/textual/widgets/_tree.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/textual/widgets/_tree.py b/src/textual/widgets/_tree.py
index ff60da1f6..1c0465c6d 100644
--- a/src/textual/widgets/_tree.py
+++ b/src/textual/widgets/_tree.py
@@ -981,6 +981,7 @@ class Tree(Generic[TreeDataType], ScrollView, can_focus=True):
         self.scroll_to_line(self.cursor_line)
 
     def action_cursor_down(self) -> None:
+        """Move the cursor down one node."""
         if self.cursor_line == -1:
             self.cursor_line = 0
         else: