Server Install boot options

[Monte Milanuk]

Hello,

I'm curious about the boot options during the server install immediately
following selecting the language. The ones labeled 'F1, F2,...F6' at the 
bottom of the screen. I can't seem to find any usable information in the 
official documentation, and what I can find in the community docs seems 
to apply to the desktop live cd version, as the options are different 
from what I'm seeing when booting from the server install cd.

Specifically, the option 'F4 Modes' used to be for selecting graphics 
modes, but now contains options 'Normal', 'OEM Install', 'Install 
minimal system', and 'Install minimal virtual machine'. And 'F6 Boot 
Options' used to contain various parameters for booting with funky 
hardware... it still does, but has two other options 'Expert' and 'Free 
Software Only' which are similarly unexplained as to what exactly they do.

Where can I find some documentation that covers what those options 
actually do, how they differ from the normal full install, etc.? Seems 
like some important options to be left completely out of the official 
documents...

Thanks,

Monte