To Add Faces

1. From the toolbar, click Add Faces.
   Tip: You can also right-click in the display and choose Add Faces.
2. Select three nodes to define the face.
3. If necessary, click Flip to switch the front and back sides of the face.
   Tip: You can also right-click the face and choose Flip Face.

Faces always have an orientation, which means they have a front and a back side. If unselected, the front side is blue and the back side is purple.