Lists possible layouts of an arc scale.
An arc scale appears as an ellipse whose length depends on the start and end scale angles.
An arc scale always appears as a circle that tries to occupy as much space as possible.
An arc scale appears as an ellipse whose sides are stretched.
An arc scale appears as the upper half of a circle which tries to occupy as much space as possible.
An arc scale appears as an upper left quarter circle.
An arc scale appears as an upper right quarter circle.
An arc scale is displayed as a three quarter circle.
The values listed by the ArcScaleLayoutMode enumeration are used to set the ArcScale.LayoutMode property.