Under the Help menu, you will find a Machine Info and Codes menu item. When you click it, you will see information about the loaded machine as well as tabs for the CNC codes that the particular machine type supports. This window is especially important when using customized machines, as the G- and M- codes in the online help may not always be the same as those for the customized machine.

 

 

You can keep this window open when you work in CNCSimulator Pro. It is convenient to have it open as a reference especially if you are a beginner on this particular machine.