Created attachment 98987 [details]
When printing the attached document, browser should automatically default to landscape page orientation.
I don't now if that's how it should really be, just re-filing bug 10894.
I seem to recall that this worked in Safari prior to version 11. Since then it's not working.
Even supporting the [ portrait | landscape ] portion of the size property spec would be extremely helpful. I don't care if the user can change the orientation of the page within the print dialog, I just want the specified orientation to be preselected when the print dialog pops up.