The_Matrix
Guest
full? What is it? What's the point?product interfaces do not have graphical interface and do not know if they were created.
if you define the product interface and insert a component, the user does not know what the entities defined in the product interface are.
so much it is worth using the 'remember constraints'.
However the reference set of positioning arise for convenience to oviate to some colleague who created a hundred floors and you only need two to place it.
I'm making examples... maybe banal... but I don't see the usefulness.
in fact we have 3 reference set (full, model and tiled (death with 7.5)).