This add-on adds options to the context menu of the location bar (aka awesome bar) that allow you to easily insert the special characters that focus the search results ( ^ * + % ~ # @ ). For example, when you only want results from bookmarks ( * ), or history ( ^ ), or open tabs ( % ), etc.
While it is obviously quicker to just type them in, you may not remember all of them at first. This add-on helps you learn them by making it easy to use them. The more you use them the quicker you'll learn them. Just right-click on the location bar and there they are. Once you can easily remember them you won't need this add-on anymore.
These are the special characters:
Add ^ to search for matches in your browsing history.
Add * to search for matches in your bookmarks.
Add + to search for matches in pages you've tagged.
Add % to search for matches in your currently open tabs.
Add ~ to search for matches in pages you've typed.
Add # to search for matches in page titles.
Add @ to search for matches in web addresses (URLs).
They can be entered before or after search terms. Learn more about them here:https://support.mozilla.org/en-US/kb/awesome-bar-find-your-bookmarks-history-and-tabs#w_changing-results-on-the-fly