The AllowControlPoint property defines the control points for an individual link, the user can use to customize the link. The AllowControlPoint property is similar with the control's AllowLinkControlPoint property, excepts that it is applied to a link only. For instance, exNoControlPoint specifies that the link displays no control points, so the user can not customize the link's path. The link's control points are displayed only if the control is not locked (control's DesignMode property is not exDesignLock The LayoutStartChanging(exLinkControlPoint) / LayoutEndChanging(exLinkControlPoint) events as soon as user starts / ends changing the link's control points. The CustomPath property specifies the link's custom path, as a string of x,y proportions separated by comma. The CustomPath property contains the proportions of link's control-points, as a "x,y,x,y,x,y,...". The x, y are proportions of link's control-points relative to the start/end points of the link. The 0,0 indicates the link's start point, while 1,1 indicates the link's end point. For instance, "0.5,0,0.5,1" defines the link to go from start (0,0) to (0.5,0), then (0.5,1), and finally to the end (1,1)