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use fi(rule)fox
(beehaw.org)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
Is Firefox not also using chromium?
No, Firefox is entirely distinct from chromium.
I did not know this, thank you.
Firefox does not use Chromium. However, people get confused because when you mod FF you change the userChrome file with CSS.
FF has had that file name even before Google had a browser.
Firefox uses their own engine, Gecko