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The scroll wheel on a mouse has been invented multiple times by different people unaware of the others' work. Other scrolling controls on a mouse, and the use of a wheel for scrolling both precede the combination of wheel and mouse. The earliest known example of the former is the Mighty Mouse prototype developed jointly by NTT, Japan and ETH Zürich, Switzer
Operating systems differ as to whether the keys (pressed without modifier) simply move the view – e.g. in Mac OS X – or also the input caret – e.g. in Microsoft Windows. In right-to-left settings, PgUp will move either upwards or rightwards (instead of left) and PgDn will move down or leftwards (instead of right).
A scroll wheel on a conventional mouse may also be used. Moving the wheel in a desired direction moves the content in the same direction. [16] Most mice contain scroll wheels that only scroll up and down, but some mice contain scroll wheels that allow the user to scroll in any direction (up, down, left or right), including diagonal directions.
You can change your mouse's DPI in the Settings menu on your computer, or if you have the right kind of mouse, by pressing the DPI button on it.
Scrolling can be controlled in other software-dependent ways by a PC mouse. Some scroll wheels can be pressed down, functioning like a button. Depending on the software, this allows both horizontal and vertical scrolling by dragging in the direction desired; when the mouse is moved to the original position, scrolling stops.
IBM sold a mouse with a pointing stick in the location where a scroll wheel is common now. A pointing stick on a mid-1990s-era Toshiba laptop. The two buttons below the keyboard act as a computer mouse: the top button is used for left-clicking while the bottom button is used for right-clicking.
Change any of the following settings, then click Save to finalize your selection: • Cc/Bcc Select whether or not you want Cc/Bcc displayed. • Default Compose Mode Select how you want the compose screen displayed. • Write mail in a pop-up screen. • Write mail in full plane compose. • Write mail in a separate window.
With IntelliPoint 4, users were able to specify mouse wheel behavior to scroll one screen at a time. This feature was useful in situations where the user had to work with windows of varying size and a fixed scroll rate alternated from being too fast or too slow depending on each window.