Modify

This function is used to supplement an existing view with new panels. This can be done in three different ways:

1. By recreating an already existing panel. In doing so, the system can be told to shift drawing mode from "intersection" to "plane view" and vice versa.

2. By adding the reflected image of an existing panel.

3. By inserting a new panel named by the user into the view.

Moreover, the extensions of the current picture can be modified in the function.