You can access many of the common polygon
         tools and menu items through context sensitive marking menus. This
         saves you time and streamlines your polygon modeling workflow. When
         you   +
  +   in the
         scene view the marking menu shows different items depending on what components
         are currently selected:
  in the
         scene view the marking menu shows different items depending on what components
         are currently selected:
      
 +
  +   in the
            scene view when nothing is selected the marking menu shows possible
            polygon creation options (for example, the Create
               Polygon Tool, and various polygon primitive types are
            available). While the marking menu is displayed, drag your mouse
            to highlight the desired item in the menu; the item is selected
            as if it were selected from the related polygon modeling menu.
  in the
            scene view when nothing is selected the marking menu shows possible
            polygon creation options (for example, the Create
               Polygon Tool, and various polygon primitive types are
            available). While the marking menu is displayed, drag your mouse
            to highlight the desired item in the menu; the item is selected
            as if it were selected from the related polygon modeling menu.