AKUSTER

1.) Zooming is not really comfortable, it reacts differently to the 3D scene. Why? 2.) to add a dimension by using “Smartdimension” with holding the shift button, I cannot choose lines from a imported STP file! Why? 3.) The geometry behind a flat surface is showing up with lines “in a specific zoom distance”, where shouldn’t be there! Especially by using extrusions! How can I suppress these lines? Thanks for you help.