From e8e4aabfdb2b16d1bffd4c04f1ad1a8d5c2e4cf5 Mon Sep 17 00:00:00 2001
From: Voinea Dragos <voinea.dragos.alexandru@gmail.com>
Date: Fri, 22 Jan 2021 21:07:14 +0200
Subject: [PATCH] Add gcode documentation

---
 Firmware/Marlin_main.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index 1a157668c..750f1d198 100755
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -5674,6 +5674,11 @@ if(eSoundMode!=e_SOUND_MODE_SILENT)
 
     /*!
 	### M20 - SD Card file list <a href="https://reprap.org/wiki/G-code#M20:_List_SD_card">M20: List SD card</a>
+    #### Usage
+    
+        M20 [ L ]
+    #### Parameters
+    - `L` - Reports ling filenames instead of just short filenames. Requires host software parsing.
     */
     case 20:
       SERIAL_PROTOCOLLNRPGM(_N("Begin file list"));////MSG_BEGIN_FILE_LIST