| Class | Description | 
|---|---|
| Curve | This class does not implement the scaling methods........ | 
| CurveLayer | Description of curve layer | 
| DrawObject | Object drawing specifiers | 
| DrawStyle | Drawing style specifiers | 
| GLine | This class provides functionality to draw straight lines in the graph. | 
| GridLine | Note : can output error to indicate that the user has not called the set origin
  function and the set mark function | 
| Layer | Layering details | 
| LineLayer | LineLayer Details | 
| Marker | marker for storing the same | 
| Paper | This is the paper class. | 
| XGridLine | Grid Line details | 
| YGridLine |