In this window, a diagram should become visible. Every one of the colored rectangles in the diagram represents a class in our project. In this project we have classes named Circle, Square, Triangle and Canvas.
Right-click on the Circle class and choose
from the popup menu. The system asks you for a 'name of the instance' – click Ok, the default name supplied is good enough for now.
You will see a red rectangle towards the bottom of the screen labeled 'circle_1'