PARAGON - DATA-Element - Lhide

Dear all, 

what does the "Display" Checkbox in the Model View do? In the attributes, it´s the Lhide Boolean, which can be set. 

The Documentation only says the following: 

Hide flag for catalog datasets: True if property is not shown on form

But which form is meant here? 

I thought, that this DATA-Element can be hidden in the parameters in 3D, but nothing changed, after changing the attribute. 

Maybe you have a clue. 

Thank you in advance

CSC