How to hide and unhide elements?

[efyjw7]

Hi revit experts, how do I unhide the door indicative line in my plan view? The unhide option on the top right is grey out, I tried in the visibility setting my door line still missing. I am able to view my door in 3D but not the line. Thanks

[jay_colcombe]

It probably due to it being a sub-category of a Category/Family.

VG > Doors > Plan Swing

[efyjw7]

Thanks