The functions of a context-sensitive menu vary, depending on where you are in the application (for that reason, context).
If you use a mouse with two buttons, click the other mouse button to display the context-sensitive menu. (The right button if you are right-handed, and the left if you are left-handed provided that you reconfigured your mouse buttons.)
With the Macintosh single-button mouse, you display the context-sensitive menu by holding down the Ctrl key at the same time you click with the button.
Below is an example of the context-sensitive menu as it displays in the graphic window in the "Press Sheet" tab with the possible actions for a selected job: