Face Properties - menu
In face properties menu you can change the parameters of the faces such as its
color and texture. These actions affect on every selected face.

Description of the buttons
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  NORMAL    ...   Inverts the normal vector of the face. This has an effect when
                  you are using a backface culling.
  COLOR     ...   Opens the colorpicker-window you can use to select a color for
                  this face. This colour will be used if you don't choose texture
                  for the face.
  TEXTURE   ...   Opens the Texture Manager-window which allows you to select a texture
                  for the face.

  GOURAUD        ...   If checked, the face has gouraud shading and you can set the color
                       of each corner of the face.
  DOUBLESIDED    ...   If checked, the face will be visible from both directions.
                  
  ROTATE -90     ...   Rotates the texture -90 degrees.
  ROTATE         ...   Rotates the texture 90 degrees.
  TEXTURE COORDS ...   Opens the texture adjuster window where you can choose more
                       accurate portion of the bitmap being used as a texture.

  TILE X         ...   Number of horizontal tiling of the texture
  TILE Y         ...   The number of vertical tiling of the texture
  TILE TEXTURE   ...   Once you press here, the texture will be tiled as you wrote
                       to the fields above.
  
  HELP      ...   This screen
  CLOSE     ...   Closes the Texture Properties menu and applies the changes you made.

Face preview area
-----------------

To change the colors of the corners, click the little boxes on each corner of the
Face preview.