About pages
From MozillaZine Knowledge Base
What are the serect pages in Firefox?
Go to the URL field and type in the following tag and press enter to see internal information.
- about: shows the version number and copyright
- about:config displays the configuration tool - best place to tweak stuff
- about:cache lists memory and disk cache information
- about:buildconfig displays what compiling options it is used to compile this binary
- about:plugins shows plugins it is installed for firefox
- about:credits shows all the developers and tests that work for this software
References: from http://www.mytips.info/html/Firefox