To create a (perma)link which displays the map with notes already turned on (while not changing other layer selections) use the URL parameter notes=yes (for example openstreetmap.org?notes=yes or =N).
To create a (perma)link which displays the map with notes already turned on (while not changing other layer selections) use the URL parameter notes=yes (for example openstreetmap.org?notes=yes or =N).