Hello. Microstation V7 SE In Workspace=>Button Assignments we can define mouse buttoms to action. Autors give us a possibility to to define "coursor3-10" as a function we want to use But how to define them? I want to define Alt+LeftButtom to zoom in (key in: zomm in extended), and also Alt+RightButtom to zoom out I tryed to figure out with help but doesn't work It would be nice You answer to [email][/email] Thank You D.