From e63a7215bb9f2490f9bf020e69cf054a5178c38e Mon Sep 17 00:00:00 2001
From: jsjtxietian <jsjtxietian@outlook.com>
Date: Wed, 1 Nov 2023 12:46:02 +0800
Subject: [PATCH] Update `add_submenu` doc to mention that submenu should
 already exist

(cherry picked from commit 34c27021e02b08062195dcf27abdbfea6dce21e7)
---
 doc/classes/PopupMenu.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/classes/PopupMenu.xml b/doc/classes/PopupMenu.xml
index 2b91236f564..b9a1c17d2ef 100644
--- a/doc/classes/PopupMenu.xml
+++ b/doc/classes/PopupMenu.xml
@@ -172,7 +172,7 @@
 			<param index="1" name="submenu" type="String" />
 			<param index="2" name="id" type="int" default="-1" />
 			<description>
-				Adds an item that will act as a submenu of the parent [PopupMenu] node when clicked. The [param submenu] argument is the name of the child [PopupMenu] node that will be shown when the item is clicked.
+				Adds an item that will act as a submenu of the parent [PopupMenu] node when clicked. The [param submenu] argument must be the name of an existing [PopupMenu] that has been added as a child to this node. This submenu will be shown when the item is clicked, hovered for long enough, or activated using the [code]ui_select[/code] or [code]ui_right[/code] input actions.
 				An [param id] can optionally be provided. If no [param id] is provided, one will be created from the index.
 			</description>
 		</method>