The entity this shape is attached to. When set, this shape
will copy the root location of the attached entity and the
shape's position will be used as an offset.
The location of the shape. For most shapes the location is
the centre of the shape, except DebugLine and DebugArrow
where this represents the start point of the line.
Set the location and dimension of the shape. If the
dimension is undefined, it will display in all dimensions.
For most shapes the location is the centre of the shape,
except DebugLine and DebugArrow where this represents the
start point of the line.
The length of the arrow's head/tip.