Line visibility

When 2 lines are in the same place on different layers… what controls the line visibility. I am looking for a command that I guess works like bring to front in photoshop. How can i control which line is visible from a view without moving its location>? THANKS !

See what the drawing-order tools can do for you:

http://docs.mcneel.com/rhino/5/help/en-us/index.htm#toolbarmap/draw_order_toolbar.htm?

HTH
-Willem

perfect thank you.