How to access context-sensitive help and commands?

You can conveniently access many options and functions by clicking with the right mouse button on different elements of the main window. For example, right-click on a graphic control and you will see a Popup Menu with functions such as: Clear, Load, Save, Copy, Paste, Screen Capture, and Help. If you want to learn more about the element it's a good idea to select Help command and read a related help topic.