What is "rhgb" on the grub, kernel line?

[Jim Cornette]

reg at dwf.com wrote:

>For Fedora2 (and 1?) grub starts Linux with an argument of
>    
>    rhgb quiet
>
>Where are these kernel arguments described, and what do they do?
>
>Ive scanned the kernel sources for the "rhgb" string and dont
>find it.
>
>
>  
>
rhgb = redhat graphical boot - This is a GUI mode booting screen with 
most of the information hidden while the user sees a rotating activity 
icon spining and brief information as to what the computer is doing.

quiet = hides the majority of boot messages before rhgb starts. These 
are supposed to make the common user more comfortable. They get alarmed 
about seeing the kernel and initializing messages, so they hide them for 
their comfort.

Of course these people probably would be more alarmed with XP or 2K 
messages during safe mode operation.

Jim