related?: https://blender.stackexchange.com/questions/16505/how-to-maximize-any-of-the-views-in-quad-view and https://blender.stackexchange.com/questions/31221/how-to-maximize-a-view-ex-front-ortho-in-blender and https://blender.stackexchange.com/questions/18320/how-to-change-the-default-views-of-quad-view
– Apr 18 '18 at 04:55
or: https://blender.stackexchange.com/questions/57102/how-do-i-achieve-the-tri-view-in-blender
– Apr 18 '18 at 05:02