Hello, I'm a boost-newbie and don't know excactly where to post my question - not only because I have some trouble with my English… sorry for that. My Problem is: I have builded some graphs which always can be drawn with an outer face consisting of 3 certain vertices. Now I am trying to find out if it is possible to select the vertices for the outer face in the Chrobak-Payne Straight Line Drawing. Because if I dont, the drawing-algorithm finds other vertices to set the outer face. Could someone tell me if this was possible without a hugh affort and maybe help me with it? (My cpp-skills arent the best :( … to play things down) I would be very thankfull and happy for any advise or help. Best wishes Jakob