Caret navigation
（重定向自Caret Browsing）
In computing, caret navigation is a kind of keyboard navigation where a caret (also known as a ‘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 (e.g., Notepad, Emacs and Vim), word processors (e.g., Microsoft Word, WordPerfect and WordStar), desktop publishing programs (e.g., PageMaker, Microsoft Publisher), and spreadsheets (e.g., Excel, Lotus 123).