I've learnt that one can add annotation on maps on OpenStreetMap by addingbox=yes&bbox=lon1,lat1,lon2,lat2 to draw a rectangle andmlon=lon&mlat=lat to add a markere.g. http://openstreetmap.org/?box=yes&bbox=-1%2C51%2C1%2C52&mlon=0&mlat=52What other drawing parameters (most importantly, text, if possible) can one add to OpenStreetMap URLs? It must be a simple URL I can email to someone, so no using APIs or running my own webserver.
Drawing parameters in OpenStreetMap URL
url;openstreetmap