Adding and substracting 3D-objects was the same as in OpensCAD. Strange they did not make OpenSCAD in AutoLISP-style. I have to read the manual all the time,

Adding and substracting 3D-objects was the same as in OpensCAD. Strange they did not make OpenSCAD in AutoLISP-style. I have to read the manual all the time, because I never learn the weird syntax of OpenSCAD for-statement.