FYI, (I just found Orbiter 2016 - I'm a little behind) and used my link to the online Orbiter.pdf and found that it goes to Orbiter.pdf (2010). (That's why I didn't know that Orbiter had been updated.) I assume that the file has been updated.
Yes, I found the new file in the Doc directory.
http://orbit.medphys.ucl.ac.uk/download/Orbiter.pdf
Yes, I found the new file in the Doc directory.
http://orbit.medphys.ucl.ac.uk/download/Orbiter.pdf