It can run in all language versions and can invoke the corresponding textual data and culture-sensitive codes that generate a user interface (UI) to meet the current user locale's requirements.

The application gathers a textual summary from the user, as well as the full blog post, which is comprised of rich text markup (XHTML). Here's a sample of the editing interface.

Command line is in all simplicity a user interface which is based on lines of commands. You can say that it is a textual direct serial processor.