moi4dNov-12-2017. Forum announcement. V4 is a major rewrite with changes on many levels so please be on the lookout for any bugs. The main new functionality is that MoI isMoI is a new 3D ModelingCAD application for desners and artists. Offering a blend of precision and freeform NURBS drawing tools, it sports a unique user interface that operates seamlessly with a pen tablet.