This is a great product. After trying and rejecting several other drawing solutions (eg. Interact, Visio) we settled for the Addflow component. We have used it since Version 2 and it has been a solid component vital to our product. We have developed a risk evaluation system in VB where the user can "draw" the logic which is converted into a mathematical model. Where the earlier versions lacked certain functionality Lassalle has listened and reacted, incorporating features into subsequent releases. Market Driven Software have no reservations in recommending this component. Good professional piece of work, and no runtime licences required.