Hi Michael:

Thank you for your answer, but it isn't exactly what I was looking for.

First of all, yes, I am talking about the Hide command from Edit.

Imagine a very complex model (and a old computer like mine), and, actually, I am working with layers.

But, in any moment, I need to hide any object from the active layer (because it is over other objects when I want to do a selection, or something similar), and after that, I want to unhide it. Then, all the objects from all the layers appears, and then -in my computer- the hard disk begin to write, the memory is full and it spends any minutes until I can to desactivate all the layers again.

And I think that if unhide command only unhide the previous hidden objects (not all included in no active layers) it was better. At least in my case. What do you think?

Cheers ;-)