Click on one of the elements on top of the map and then click on the map in order to draw. Double-click to complete drawing of a line or polygon. Click on an element to open its infowindow, any edits take effect after closing the infowindow.
Drag marker, circle, text to change their position. Edit a line or shape by mousing over it and dragging any of its vertices. Click on a main vertex to delete it. Watch the video.