Merge pull request 'new page: firefox address bar tips' (#2) from erxeto/institute-wiki:firefox-shortcuts into master

pages/firefox-address-bar-tips.md

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+<!--
+title: firefox address bar tips
+author: erxeto
+description: Some useful tips for using the firefox address bar more
+efficiently
+-->
+
+# Firefox address bar.
+
+The address bar has become our entry point to the internet these days.
+Firefox in its default configuration does some sort of _smart_ guess on
+what you type there.  If it resembles a [URL][https://en.wikipedia.org/wiki/URL]
+then the browser makes that request.  If not, it sends the string you typed
+to your default search engine.  It also includes some fuzzy search matches
+from your history and all that, which is fine 90% of the time, but
+sometimes you need a bit more control over what results it shows you.
+
+# Changing the address bar behaviour
+
+This is a list of modifiers you can set at the beginning of the search to
+tell firefox what do you want to see on the results, a kind of filtering:
+
+```
+^    to search for matches in your browsing history.
+*    to search for matches in your bookmarks.
++    to search for matches in pages you've tagged.
+%    to search for matches in your currently open tabs.
+#    to search for matches in page titles.
+$    to search for matches in web addresses (URLs).
+?    to search for matches in suggestions.
+```
+
+# Examples
+
+So, if you want to search for the word `headphones` in your bookmarks only,
+you can type on the address bar:
+
+`*headphones`
+
+And, if you want to include only the results of your browsing history it
+would be:
+
+`^headphones`
+
+[back](/)