カーソル
The cursor (Cursor) is used to show an object of instructions and the operation in the one of the elements constituting the user interface of the computer. Verb "currere" which originally "Cursor" is Latin, and mean "runner" or "running" which I mean "a competitor", and "run" is the etymology. A console and the cursor in the letter input interface such as the text editor show whether a letter input next is added to where in a text. In the form to be seen for a long time, it is displayed as a quadrangle painted over or an underline. When I turn it on and off to let you attract attention, there is much it. In addition, there is the system that quadrangles use the shape of the cursor in the overstrike mode by an underline with the insertion mode, and a user can stream down mode reshuffling. When I display a cursor in a bar displayed between letters or a caret with the screen display by the recent BitMap, there is much it. I get possible to express "the insertion" to the letter interval more directly by doing it this way and can control a change of the cursor shape in the proportional font again. On the other hand, there is the fault to be hard to become outstanding on a screen in comparison with the cursor of the quadrangle. I refer to the word processor. It is necessary to show which choice you are going to choose in the interface of the menu choice type you choose operation from a choice given beforehand, and to order. I display an arrow before a choice or, for concrete shape, a method making reversing display has choice oneself stolen. In GUI environment, the small figures such as the arrows which are displayed to show an operation object are called a cursor. I am called the mouse pointer as I mention it later in a knob of "the operation of the cursor" because it is often that it is operated with a mouse. By the system which both cursors for a cursor and texts for GUI appear, the name of "the cursor" is a caret towards an errand, text use for GUI use(Caret) There is the example which I call と and distinguish. It is much GUI, and the form of the cursor changes depending on the situation. In programming language LOGO, I can describe a figure by giving commands such as the "turning" "progress" for a tortoise (a turtle) on the screen. The turtle maintains a position and a progress course now. Many of keyboards of the computing system have a cursor control key to four directions of top and bottom right and left. In addition, there is the interface to order the movement of the cursor by control key and other key combinations. Diamond cursor is the one example. vi and Emacs of popular high text editor adopt cursor movement operation peculiar to each in UNIX. A thing offering a customized method for even other applications to reproduce these cursor movement appears. There are many things letting I adopt menu type interface with the game console and operate it with a cross key. I operate a cursor with the pointing devices such as mice in GUI mainly.