The Aircraft Body shape is defined with 16 dimensions. Many of these default to a reasonable value if the field is zero. Default values are shown in red with an asterisk beside the field. Obviously, some dimensions are more critical than others but you are strongly advised to replace all of the default values with accurate data. The Fuselage length and Wing span must be provided. As soon as these values are entered, a default outline is displayed.
The Wing tip leading edge offset is a critical value since it locates the point that is often critical in determining the swept envelope.
Enter as many values as you can.