It is good practice to make sure that the View toolbar and Draw toolbar are displayed. The tools available on these toolbars make it easier to control the view, and the entities that are drawn on screen later on in the process.

The toolbar is displayed at the right hand side of the Graphics window as follows:

The buttons on this toolbar are described further in the CopyCAD on-line help. Tooltips also describe the function of each button.
The Draw toolbar is displayed at the bottom of the Graphics window as follows:

You use the Draw toolbar buttons to control the CopyCAD components displayed. The buttons are toggles, so selecting a button once will draw an entity, pressing the button again will undraw the entity.
The buttons on this toolbar are described further in the CopyCAD on-line help.