The change is to allow multiple sets of tickmarks (as many as you want) across any arbritrary ranges that you want, which will allow creation of gauges that use split-scales, like Vac/Boost gauges, thus similar to something like:
My gauge (at the end) is inspired by this Autometer gauge:
The code is already completed and working, and I am in the process of converting the gauges distributed with megatunix to the new API.
I m also investigating the possibility of enhancing the gauges with the use of simple polygons, and multiple needle choices which add a nice touch of authenticity...
sorry for any inconvenience...