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The original Macintosh has no arrow keys. Before the computer mouse was widespread, arrow keys were the primary way of moving a cursor on screen. Mouse keys is a feature that allows controlling a mouse cursor with arrow keys instead.
Scroll bars (including at least OS X 10.3.x) – Option-clicking a scroll bar arrow can cause the view to jump to the next page instead of moving by a few lines. Option-clicking in the scroll bar can cause the view to jump to that position instead of jumping to the next page. This behavior can be reversed in System Preferences: Appearance.
Examples of horizontal and vertical scrollbars around a text box Examples of vertical scrollbar at right end of Wikipedia home page. A scrollbar is an interaction technique or widget in which continuous text, pictures, or any other content can be scrolled in a predetermined direction (up, down, left, or right) on a computer display, window, or viewport so that all of the content can be viewed ...
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
The scroll-lock key with an activated indicator light on an IBM Model M keyboard. Scroll Lock (⤓ or ⇳) is a lock key (typically with an associated status light) on most IBM-compatible computer keyboards. Depending on the operating system, it may be used for different purposes, and applications may assign functions to the key or change their ...
Scrolling may take place in discrete increments (perhaps one or a few lines of text at a time), or continuously (smooth scrolling). Frame rate is the speed at which an entire image is redisplayed. It is related to scrolling in that changes to text and image position can only happen as often as the image can be redisplayed.
The dark mode gadget applies an invert filter to the root HTML node, and with this setting the background to black, it results in the white overflow area. I think the background: #000 should actually be background: #fff. I've applied this change in my vector.css override and the white overflow area returned to black as expected.
The three Num Lock/Caps Lock/Scroll Lock status lights are arranged vertically between the two halves of the alphanumeric section. Although it was not the first ergonomic keyboard, it was the first widely available sub-$100 offering. [5] The keyboard gained popularity quickly, exceeding Microsoft's forecast of 100,000 units sold by the end of 1994.