The following screen dump shows a command prompt - in this case, the user has logged on to a (mail) server and can use the server's functions by typing in commands.Ĭlick to enlarge. These 'Command prompts' are used by (usually) expert users who type in commands and possibly some parameters that will affect the way the command is executed. 26.1 Command language (or command entry)Ĭommand language is the earliest form of interaction style and is still being used, though mainly on Linux/Unix operating systems. (1994), the types of interaction styles mentioned are usually command language, form fillin, menu selection, and direct manipulation. In HCI textbooks, such as Shneiderman (1997) and Preece et al.
For example, you can talk about menu selection (defined below) in mobile phones. These concepts do however retain some of their descriptive powers outside the computer medium. The concept belongs in the realm of HCI or at least have its roots in the computer medium, usually in the form of a workstation or a desktop computer. The concept of Interaction Styles refers to all the ways the user can communicate or otherwise interact with the computer system.
