I have 10 layers in my document.
I turned OFF 7 of them and curently working with only 3.
How can I save this situation (only 3 layers on) so I dont need to turn on off 7 layers every time I need to get back?
Thank you
Are you on Windows? You can use the layer state manager (LayerStateManager command) to save layer states. This is a plug-in that is installed automatically with Windows Rhino, but it is not yet implemented in MacRhino.
–Mitch
Sound like the thing I want. 
How do I do this?
in the help associated to your Rino installation or online:
http://docs.mcneel.com/rhino/5/help/en-us/index.htm
search for LayerStateManager