v3.1 [Dec 15, 2014]
•Adds two built-in area units, hectare (ha) and acre (ac)
•Handles units which are linear and squared for area (eg mile) and now also units which are areas only (eg acre)
•Allows user to add additional area units, so if you wish to compare large areas to the area of Wales, you can!
•Pro tip - to add Wales as a unit, the conversion factor you need to enter is 4556.42 (the number of metres along one side of a square of this unit)
•Applies 'hilliness' slider to area as well as distance
•Values of the hilliness slider revised.
•At its maximum setting, it applies an adjustment equivalent to a 66% / 32 degree slope over the entire length of the route or over the entire enclosed area
•Note that the effect of the hilliness slider is logarithmic which is appropriate
•Preferences window now stays on top of acetate window, which is more user-friendly when acetate window is used full-screen. It can be moved or closed, even while drawing a line, and of course recalled with cmd-comma
