From 9838e340e030b255f8256dcf0e7029c15cf7a291 Mon Sep 17 00:00:00 2001
From: Daniel Agar <daniel@agar.ca>
Date: Tue, 6 Oct 2020 09:52:42 -0400
Subject: [PATCH] systemcmds/tune_control: add play error documentation

---
 src/systemcmds/tune_control/tune_control.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/systemcmds/tune_control/tune_control.cpp b/src/systemcmds/tune_control/tune_control.cpp
index c0bdfb5ecb..0a677e45ba 100644
--- a/src/systemcmds/tune_control/tune_control.cpp
+++ b/src/systemcmds/tune_control/tune_control.cpp
@@ -249,6 +249,7 @@ $ tune_control play -t 2
 
 	PRINT_MODULE_USAGE_NAME("tune_control", "system");
 	PRINT_MODULE_USAGE_COMMAND_DESCR("play", "Play system tune or single note.");
+	PRINT_MODULE_USAGE_ARG("error", "Play error tune", false);
 	PRINT_MODULE_USAGE_PARAM_INT('t', 1, 1, 21, "Play predefined system tune", true);
 	PRINT_MODULE_USAGE_PARAM_INT('f', -1, 0, 22, "Frequency of note in Hz (0-22kHz)", true);
 	PRINT_MODULE_USAGE_PARAM_INT('d', -1, 1, 21, "Duration of note in us", true);