As you may know, when you enter a URL in the address bar of Firefox, Firefox automatically displays the access history containing the entered content or the content in the user's bookmarks, as shown in ), in this way, you can directly click the corresponding URL to enter, which brings great convenience to users.
We can see that the content you entered is highlighted in the suggestion in bold and underlined form. This form will be changed in the Firefox 16 browser, shows the new recommendations:
We can see that the content entered in Firefox 16 will be highlighted with a gray background in the suggestion, which makes it easier for users to differentiate and choose from.
Of course, some browsing fans may worry that this function will leak their privacy, such as historical access records. Don't worry, you can select the displayed content in the setting options of the Firefox browser, or disable this function.