Only one: I think fairly early on we tried to make the options
descriptive rather than numeric so that there isn't confusion resulting
from what the quantity within the settings file means if the version
changes. My thinking is that it is only the really old versions that are
a problem, but I think most beta testers are beyond that because there
was a problem with Octave freezing around then if the settings file
wasn't just so. Torsten did most of the work there, so he'll have a
better perspective.