Improved virtual tool position

Trailed tools generally have transport wheels in a different location from spreading or sowing. Which translates erroneously to the screen when turning or reversing.

it could have a function to adjust or locate the axle.
the function could almost already exist if we could block the articulation of the second element on a double trailed tool. we block the ramp parallel to the axle.

then there was work on the tool guidance, perhaps only in a first step before guiding the tools or the tractor. it could simply display its real position on the screen.