Since v4.3 we added polyline support which allows you to draw directly on your maps by using geometry layers like polylines, polygons, circles and rectangles directly on your maps:
Please see the following animation on how polylines can be edited (animation with courtesy of Sumit Kunar – just be aware that the marker adding functionality as seen in the animation is not supported in Maps Marker Pro – if you want to add a marker, please use the “add marker” feature):
