If a character had a bottom offset for one view but none for another,
the offset was not getting cleared properly when switching

The default displayed unit was cm^2, but it was m^2 internally -
so it would wind up shrinking if you went to m^2. This needs to be
fixed more generally, though - it should be able to start at any unit
and still work properly.

units

These let a character have micro/normal/macro heights

This was causing things to vanish when editing numbers

It should put the height in the currently chosen unit into the input box