diff --git a/src/droplets/ad_droplet.cpp b/src/droplets/ad_droplet.cpp
index 707f283..4350a02 100644
--- a/src/droplets/ad_droplet.cpp
+++ b/src/droplets/ad_droplet.cpp
@@ -211,6 +211,7 @@ void ADDroplet::UpdateStateCallback() {
 	       sample_rate,
 	       State());
   }
+  delete title_graph;
   title_graph = new Graph(GetScreenMax()-GetScreenMin(),
 			  GetTitleHeight());
 }
diff --git a/src/graphics/graph.h b/src/graphics/graph.h
index 58f1454..6fe6cdc 100644
--- a/src/graphics/graph.h
+++ b/src/graphics/graph.h
@@ -14,15 +14,68 @@ class Graph {
   bool** graph;
   int GetNextActive();
  public:
+  /*
+   * Contsturctor for graph.
+   * 
+   * @param m_width width
+   * @param m_height height
+   */
   Graph(int m_width,
 	int m_height);
+  /*
+   * Destructor for graph.
+   */
   ~Graph();
+
+  /*
+   * Shifts the graph by one pixel.
+   */
   void Update();
+
+  /*
+   * Clears the pxiels at the currently active column.
+   */
   void ClearColumn();
+
+  /*
+   * Draws an active pixel on the graph.
+   * 
+   * @param pos y dimension of pixel
+   */
   void SetPixel(int pos);
+
+  /*
+   * Draws a pixel on the graph.
+   * 
+   * @param pos y dimension of pixel
+   * @param on pixel active state
+   */
   void SetPixel(int pos, bool on);
+
+  /*
+   * Draws an acive pixel based on a percentage of the 
+   * the height of the graph.
+   *
+   * @param percentage precentage height of the pixel
+   */
   void SetPixelPercentage(double percentage);
+
+  /*
+   * Draws a pixel based on a percentage of the 
+   * the height of the graph.
+   *
+   * @param percentage precentage height of the pixel
+   * @param on pixel active state
+   */
   void SetPixelPercentage(double percentage, bool on);
+
+  /*
+   * Draws graph on display.
+   * 
+   * @param patch daisy patch board
+   * @param x starting x coordinate of graph
+   * @param y starting y coordinate of graph
+   */
   void Draw(DaisyPatch* patch, int x, int y);
 };