HTTP pipelining - Topic profile

I ran the Optimizer at PCPitstop.com, and it recommended the following 15 tweaks in F'fox, but for the life of me I cannot find any of these entries even when doing a search for them either in Regedit, or RegSeeker. Can someone tell me where these entries are, or are they recommended entries that need to be added, which may be the reason I'm not finding them....

First things, first... Open a new tab, type about :config into the address bar and hit enter... The field entitled "filter" is where you type the stuff you see below... Appearance: browser.display.focus_ring_width This option will remove that annoying ring of dots (aka an ant trail) from selected/active links/elements. Default value = "1". "0" = Hide the ...

AFAIK, persistent HTTP connections are the default in HTTP/1.1 and not in earlier versions of the protocol. You may want to change to "GET / HTTP/1.1" OR continue to use HTTP/1.0 and add the "Connection: Keep-AliveKeep-Alive: 300" headers and hope that the HTTP server supports keep alive. Further, the end of a persistent connection in HTTP/1.1 is signaled by the "Connection: close" header, ...