If you enable printing in the settings, the map will include a print icon which offers 3 options:
Generally these work as you expect, but if you want to print from the fullscreen view then you have to use Auto, otherwise the print window will not show the extended area. I’m not sure why this is. Auto is generally the best choice but it may not work in all browsers.
I have found that the print sometimes spills over onto a second page. Check the Scale setting on the printer settings when the print dialogue comes up in your browser. In Chrome it needs to be on ‘Default’.« Advanced settings Up Custom CSS »