Description of problem:
1. Section E.3 of the installation manual:

https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Installation_Guide/s1-grub-installing.html

talks about installing various stages of the grub and the destination of the install being the MBR.  But that is not true on a UEFI system all that is required is to install grub.conf and grub.efi in /boot/efi/EFI/redhat.  

2. The default grub.conf contains a "device" line like this.

device (hd0) HD(1,800,fa000,48138806-3f64-4d32-b4b1-a5a32fae6c66)

There is nothing in the documentation that describes a line using this syntax (there is documentation on a "device" command but not using that syntax). It appears to be defining (hd0) to be the hard disk with the 4 characteristics specified in the (...), but what are the 4 items in the (...)?

Version-Release number of selected component (if applicable):
GRUB/UEFI Documentation 

How reproducible:
N/A

Steps to Reproduce:
See the RHEL-6 installation guide link: 

https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Installation_Guide/s1-grub-installing.html

Actual results:
No proper documentation for GRUB on UEFI system. 

Expected results:
There should be proper documentation in RHEL-6 installation guide like: 
1) How grub-install works on UEFI based system. 
2) What is the 'device' parameter in grub.conf of a UEFI system. For example: 

   device (hd0) HD(1,800,fa000,48138806-3f64-4d32-b4b1-a5a32fae6c66)

The meaning of above line is: 

(hd0): references /boot/grub/device.map device
HD(): The media type (harddrive).  There's also CD, Vendor, File, UnknownMedia, UnknownBIOS.  These each take unique parameters.   
1: partition number (starts at 1)
800: partition start
fa000: partition size
48138806-3f64-4d32-b4b1-a5a32fae6c66: partition signature

But its no where documented. 

Additional info: