The Skip Barber Vehicle, from the rFactor 2 DevMode Installation, has some Explanations for Values, in some of the Physics Files.
I have included all of them here, to get a Way to have them available, even if you maybe have the Skip Barber deleted.
In the below Dropdown, select the File (hdv, tbc,..) in that the Value is, for that you want to have an Explanation.
If it's selected, all available Explanations in this File are shown, sorted by the Entry, in alphabetical Order.