More practical information about playfield layout and "standard" locations

[SierraNL]

I'm building a homebrew machine, without having an actual machine/playfield around.
And while MPF and it's docs are of great help of getting the software part clear. I'm struggeling to find some basic info to start prototyping my playfield:

• From the bottom, how far up should the flipper holes be?
• How far apart are the flippers (usually)?
• What angle do the flippers point downward usually (I know I can change this)?

Info like this could be part of the "Layout conciderations" section.