There are times when you want to navigate over a webpage using the keyboard, this is called caret browsing of a webpage. In computing, caret navigation is a kind of keyboard navigation where a caret (also known as "text cursor", "text insertion cursor", or "text selection cursor") is used to navigate within a text document. It is a fundamental feature for applications that deal with text, for example text editors, word processors and desktop publishing programs.
This kind of navigation is also supported by the Mozilla-based web browsers, where it is referred as "caret browsing". A shortcut key (F7) is assigned to toggle between caret mode and non-caret mode. In caret mode, a blinking caret appears within the webpage. User can then navigate the webpage using arrow keys. The navigation is finer than spatial navigation and tabbing navigation, which deals with hyperlinks only, but most times it is slower.
In order to turn on caret browsing mode in Internet Explorer you just need to press F7 on your computer keyboard, just when you press the function key on the keyboard you will see the following message.
Once this mode is enabled, you will be able to navigate through the page just by using the cursor and navigate it across the page using the left right and up down arrow keys on the keyboard.