diff --git a/docs/G400.txt b/docs/G400.txt
index 6a8128d..4a66a9e 100644
--- a/docs/G400.txt
+++ b/docs/G400.txt
@@ -557,7 +557,7 @@
 		"cur": "0°",
 		"default": "0°",
 		"size": 40,
-		"range": ["0°", "90°", "180°", "-90°"]
+		"range": ["0°", "90°", "180°", "-90°", "自动文本方向识别°"]
 	},
 	"49": {
 		"category": "base",