=========================== Following: https://forum.freecadweb.org/viewtopic.php?p=539914#p539914 Following requests from OpenBrain and ChrisB: https://forum.freecadweb.org/viewtopic.php?p=540015#p540015 Following request from M4X: Recomendation to use "L" and "I" for vertical and horizontal distance constraints and "R" for radius. https://forum.freecadweb.org/viewtopic.php?p=540049#p540049 https://forum.freecadweb.org/viewtopic.php?p=540011#p540011