*E* - Start creating a polygon
*P* - Start creating a POI
*R* - Start creating a road
*T* - Start creating a railway line
*W* - Start creating a river
*Enter* - Finish drawing/editing the polyline/polygon
*Escape*- While drawing/editing is in progress, cancel the edit.
*Backspace* - While drawing a line, delete the last point
Regards,
Map Maker Guide