The 3D > Common Views command displays a two- dimensional or isometric orientation of objects in the active
view. This command opens the Common Views dialog box, which displays a three-dimensional wireframe box. This box consists of
white circles on each corner and three white arrows that point to the faces. Each
corner circle, arrow, or face of the box highlights in yellow as you pause the pointer
over it. You can select one of the six faces of the 3D box to change your view to
a 2D view, or you can select one of the eight corner circles to change your view to
an isometric view. A message at the bottom of the dialog box indicates the direction
or type of your selection, such as Plan, Isometric, and so forth.