The most used commands are listed in the right-click menu. If an object is on or selected and the right-click menu is opened, special commands belonging to that object are also added to the list. If the Use Right Button for Context Menu feature is activated, you can access the menu with the right button by clicking the right mouse button.

Location of Use Right Button for Context Menu Feature

You can access the preferences dialog from the general tab.

If Use Right Button for Context Menu is not active, you can access the right-click menu by pressing the Ctrl key on the keyboard and clicking the right mouse button.