Suppose you have a global `var lineRenderer:LineRenderer` as your Line Renderer variable. Each vertex is stored in `linePoints` - how do you wipe out all the lines, so that you can start over?
`Destroy(lineRenderer);` does not work. It will eventually give you an error when you try to initiate to draw new lines "Can't add component 'LineRenderer' to objName because such a component is already added to the game object! UnityEngine.GameObject:AddComponent(Type)"