diff --git a/common/source/docs/common-basic-operation.rst b/common/source/docs/common-basic-operation.rst
index 4bef8c63ae..bd534ac1b9 100644
--- a/common/source/docs/common-basic-operation.rst
+++ b/common/source/docs/common-basic-operation.rst
@@ -4,9 +4,8 @@
 Simple Overview of ArduPilot Operation
 ======================================
 
-[site wiki="sub]
-.. note:: Sub is a special sub case of the generalized vehicle system explained below, with a specific ROV configuration as its default configuration. This configuration by default does not use RC control but uses MAVLink commands from a tethered surface ground control station usually imploying a joystick and many buttons for most controls.
-
+[site wiki="sub"]
+.. note:: Sub is a special sub-case of the generalized vehicle system explained below, with a specific ROV configuration as its default setup. This configuration by default does not use radio control (RC), but uses MAVLink commands from a tethered surface ground control station, usually employing a joystick and many buttons for most controls. However, RC *can* be utilized with parameter changes from the defaults. See :ref`:rc-setup` for more information.
 [/site]
 
 This is a very basic overview of the functions of ArduPilot firmware running on an autopilot. Shown below is a simple block diagram of the basic functional operation. This will give you a better understanding of ArduPilot basic functions as you configure your system.