You’re now running the Processing Development Environment (or PDE). There’s not much to it; the large area is the Text Editor, and there’s a row of buttons across the top; this is the toolbar. Below the editor is the Message Area, and below that is the Console. The Message Area is used for one line messages, and the Console is used for more technical details.
In the editor, type the following:
ellipse(50, 50, 80, 80);
This line of code means “draw an ellipse…..
Flag this Resource