MGN9 Z-rail orientation clarification

[CaptainLunch]

I put my Z-rails on the front/back insides instead of the side insides. I noticed that there're several "check your work" images, and I feel like there should be a top-down view of the rail mounting situation with an instruction to tape a label to the "front". That or mounting the rails after the bottom plate, which is the first non-symmetric part.

[CaptainLunch]

Actually, the bed rails are the first non-symmetric part, sorry