FNC Chart - Annotation Shape

Documentation says the annotation can be rectangle, ellipsis or baloon, but the Shape has only 2 possible values:
TTMSFNCChartAnnotationShape = (asRectangle, asCircle);


This might be a typo, we'll correct it, but balloon is not an option in TMS FNC Chart. We'll add this on our todolist and see if we can add balloon as well.