Use Line Tool to create a polyline object. The edge of the line object is composed of straight lines and curves. Small rectangles are end points of straight lines and curves. Small circles are middle points of curves. The cross at the left side is beginning of the edge.
Routable Road Tool works in a similar way as the line tool, but it produces road objects suitable for navigation. Current version of Mapwel software requires straight-line elements on routable roads (i.e. no curve elements).
Depending on the type, Line object can have: