The ribbon is displayed above the Graphics window.
Select a tab to make it active and display the buttons on that tab:
Move the cursor over a button to display a tool tip giving you more information about the button.
Menu buttons contain multiple buttons.
Buttons resize depending on the width of the FeatureCAM window.
Use the keyboard to move between tabs on the ribbon and access commands on the Quick Access Toolbar. Press the Alt key, and then press the letter on the keyboard corresponding to the letter displayed over the tab or command you want to use. For example, press the Alt key, and then press the C key to choose the Construct tab or press the 6 key to open the FeatureCAM Options dialog.