diff --git a/HTTP-request-API.md b/HTTP-request-API.md
index 78a1e78..e25536e 100644
--- a/HTTP-request-API.md
+++ b/HTTP-request-API.md
@@ -89,7 +89,6 @@ Parameter | Value Range | Description | Since Version
 
 Parameter | Value Range | Description | Since Version
 | --- | --- | --- | --- |
-&MS= | 0 to 16(String 0..64) | Save API macro | 0.5.0
 &M= | 0 to 16 | Apply macro | 0.5.0
 
 ## Segments