diff --git a/doc/classes/EditorPlugin.xml b/doc/classes/EditorPlugin.xml
index 1f3f028bbe8..838c104b69c 100644
--- a/doc/classes/EditorPlugin.xml
+++ b/doc/classes/EditorPlugin.xml
@@ -5,6 +5,7 @@
 	</brief_description>
 	<description>
 		Plugins are used by the editor to extend functionality. The most common types of plugins are those which edit a given node or resource type, import plugins and export plugins. See also [EditorScript] to add functions to the editor.
+		[b]Note:[/b] Some names in this class contain "left" or "right" (e.g. [constant DOCK_SLOT_LEFT_UL]). These APIs assume left-to-right layout, and would be backwards when using right-to-left layout. These names are kept for compatibility reasons.
 	</description>
 	<tutorials>
 		<link title="Editor plugins documentation index">$DOCS_URL/tutorials/plugins/editor/index.html</link>
@@ -787,13 +788,13 @@
 			Dock slot, left side, bottom-right (in default layout includes FileSystem dock).
 		</constant>
 		<constant name="DOCK_SLOT_RIGHT_UL" value="4" enum="DockSlot">
-			Dock slot, right side, upper-left (empty in default layout).
+			Dock slot, right side, upper-left (in default layout includes Inspector, Node, and History docks).
 		</constant>
 		<constant name="DOCK_SLOT_RIGHT_BL" value="5" enum="DockSlot">
 			Dock slot, right side, bottom-left (empty in default layout).
 		</constant>
 		<constant name="DOCK_SLOT_RIGHT_UR" value="6" enum="DockSlot">
-			Dock slot, right side, upper-right (in default layout includes Inspector, Node and History docks).
+			Dock slot, right side, upper-right (empty in default layout).
 		</constant>
 		<constant name="DOCK_SLOT_RIGHT_BR" value="7" enum="DockSlot">
 			Dock slot, right side, bottom-right (empty in default layout).