Help > Authoring > Equations > Using the Equation Editor > Using the Mouse in the Equation Editor > Right Mouse Button
  
Right Mouse Button
Use the RIGHT mouse button to display shortcut menus.
• Press the RIGHT mouse button in the Equation Editor window to bring up the shortcut menu.
• Choose from the shortcut menu by holding down the RIGHT mouse button and releasing it when the desired option is highlighted.
• In the Palette, press the RIGHT mouse button on any Palette button to bring up the Palette Menu.