How can I load my personalized objects into the library so that I can use them again later?

Objects that you have imported once are then available in the library. Objects that you in DATAflor GRÜNSTUDIO You can create 3D via Tools> Model Creation Wizard load into the library (restrictions: street variants). By Ctrl+C (copy) and Ctrl+V (paste) you can also copy individual objects or groups of objects from one project to another.