Diagrams.TwoD.Arrow
arrowV
arrowV'
arrowAt
arrowAt'
arrowBetween
arrowBetween'
connect
connect'
connectPerim
connectPerim'
connectOutside
connectOutside'
arrow
arrow'
data ArrowOpts
arrowHead
arrowTail
arrowShaft
headSize
tailSize
headGap
tailGap
gap
headColor
headStyle
tailColor
tailStyle
shaftColor
shaftStyle
straightShaft