[Q] Boot Options

[chepe263]

When the phone starts and the vol. down key is pressed there are different options. I would like detailed information about the boot options of atrix.

Fastboot
NvFlash
BP HW Bypass RSD
BP HW Bypass QC DLOAD
BP HW Diag & Boot AP
BP HW Bypass BP Only
BP HW Bypass RSD
Android Recovery
Boot Android (No BP)
Device UID
console=tty50,115200n8
Early Usb Enumeration
BP tools
RSD

So far I know that...

Android Recovery is for CWM recovery for example
Device UID show a number
Boot Android (No BP) boots phone with no telephone signal

What are the purposes for the rest boot options?