Wish: layout print preview in Rhino viewport

I would like to see a print preview being implemented for layouts, where borders of details are hidden and line thicknesses become visible.

Haven’t tried this myself yet in layout but PrintDisplay or LayoutLinetypes doesn’t work?
http://docs.mcneel.com/rhino/5/help/en-us/commands/printdisplay.htm

yes printdisplay works, but there is no way I know of to hide the borders of details.
So maybe I need to specify my wish to only that: a show/hide details border.

Hmm, the detail borders are set to “no print” by default - they do not show up in the Print dialog preview. But yes, they are visible even when PrintDisplay is on… Maybe that is deliberate, as if they were invisible, it would be hard to select the detail otherwise…