Ok, Invisible model lines to make something visible in plan that is above the cut plane - I can do that easily with lights etc. What the ...... is going on with this generic model? I cant get the model line to lock to ref level (it shows locked on the familiy but doesnt do it in the model) so I set a parameter to set the length of the invisible line below - and that messes up the elevation setting in the model - along with my day, my hair and my blood pressure - somebody please help - I have even gone beyond the rank of family master on zoog and I just dont get it??