Sticky keys is an accessibility feature of some graphical user interfaces which assists users who have physical disabilities or help users reduce repetitive strain injury. It serializes keystrokes instead of pressing multiple keys at a time, allowing the user to press and release a modifier key, such as ⇧ Shift, Ctrl, Alt, or the Windows key, and have it remain active until any other key is pressed.
Sticky keys functionality is available on/in Microsoft Windows, macOS, chromeOS and KDE Plasma as Sticky Keys,[1][2] and on Unix/X11 systems as part of the AccessX utility.[3][4]
History
[edit]Sticky Keys was first[when?] introduced to System 6 as part of the Easy Access extension, which also included mouse keys functionality.[5]
In 1994, Solaris 2.4 shipped with the AccessX utility, which also provided sticky keys and mouse keys functionality.[6]
See also
[edit]References
[edit]- ^ "Make the keyboard easier to use in Windows 7 – Windows Help". Microsoft. August 31, 2016. Retrieved April 29, 2018.
- ^ "macOS Sierra: Use accessibility features". Apple Support. Apple Inc. September 23, 2015. Retrieved December 28, 2015.
- ^ "The X Keyboard Extension: Protocol Specification" (PDF). Retrieved 2009-11-08.
- ^ Underwood, R. C. (September 10, 1999). "SGI AccessX".[permanent dead link]
- ^ Using Your Classic (PDF). Apple Inc. p. 146. Archived from the original (PDF) on December 12, 2002.
- ^ "About AccessX". Sun Microsystems Accessibility Program. Sun Microsystems. April 24, 2005. Archived from the original on August 17, 2007.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction