Each filter within a wizard must define the following for each type before Import will be allowed:

• Surface - northing and easting

• Horizontal Alignment - northing and easting

• Horizontal Event Points - northing and easting, or station

• Horizontal Regression Points - northing and easting, or station

• Vertical Alignment - northing and easting, or station and elevation

• Vertical Event Points - northing and easting, or station

• Cogo Points - northing and easting, or station