I have a roof light that I want to show in plan using symbolic line's, I added a sub-category to be able to control the visibility of the roof light in plan, but no matter what I try I cant get the symbolic line to show up in plan. I've looked at a the post's reffering to this and ways of overcoming this but I'm still unsure as what to do.
Any help would be really appreciated.
Regards, Paul.