Deleting history in Firefox
Have you ever made a typo when entering a URL in Firefox? Firefox remembers any entered URL's, so it can match them against what you type, whether they're valid or not.
Which can be annoying the next time you use it and it tries to "autocomplete" your URL in the location bar. To remove any entries you no longer want, scroll through the URL history list and press the "shift+delete" keys.
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