Documentation cleanup

lib/DisplayProxy/DisplayProxy.h

@@ -3,6 +3,7 @@
 
 /**
  * Generic interface for a graphical display allowing for placement of text.
+ * Focused on TUI. 
  */
 class DisplayProxy
 {
@@ -12,6 +13,7 @@ public:
      * @return True if successful.
      */
     virtual bool on() = 0;
+
     /**
      * Turn off the display.
      * @return True if successful.
@@ -27,6 +29,7 @@ public:
      * @return True if successful.
      */
     virtual bool write(int x, int y, const char *text) = 0;
+
     /**
      * Clear the entire screen.
      * @return True if successful.

lib/DisplayProxy/DisplayProxyMAX7456.h

@@ -6,12 +6,14 @@
 
 
 /**
- * Text-User-Interface on a Max7456
+ * Text-User-Interface on a MAX7456
  * 
- * The Max7456 provides On-Screen-Display rendering for composite video.
+ * The MAX7456 provides On-Screen-Display rendering for composite video.
  * (Think old school VCR menu overlay)
  * 
- * @link https://www.maximintegrated.com/en/products/analog/video-products/MAX7456.html
+ * To find the offical documentation for the part please refer to the Maxim page for the MAX7456.
+ * [Maxim Page](https://www.maximintegrated.com/en/products/analog/video-products/MAX7456.html)
+ * 
  */
 class DisplayProxyMAX7456 : public DisplayProxy
 {
@@ -45,7 +47,19 @@ public:
      * Since the signal is analog the characters might be rendered outside the display area
      */
     bool setOffset(int x, int y);
+
+    /**
+     * Turn off the external video feed
+     * If the external feed is disabled the background will be grey
+     * @param enabled True to turn on the external video input
+     */
     bool externalVideo(bool enabled);
+    
+    /**
+     * Turn on the overlay
+     * 
+     * @param enabled True to turn on the overlay
+     */
     bool onScreenDisplay(bool enabled);
 
 private: