Control-C else, typically returning control to the user. Ctrl-C was one of a handful of keyboard sequences chosen by the program designers at Xerox PARC to control text editing, with Ctrl-Z (Undo), Ctrl-X (Cut), Ctrl-V (Paste), and Ctrl-P (Print). The first four letters are all located together at the left end of the bottom row of the standard QWERTY keyboard, and P towards the upper right. The equivalent key combination on Macintosh computers is Command-C. Control-C as an abort command was popularized by TOPS-20 and TOPS-10 and adopted by other systems including Unix. It was also adopted by Digital Equipment operating
QWERTY called "US-International layout" is, in fact, OS-dependent. There exist other layouts that try to overcome this shortcoming. One popular is EurKEY which is available for Windows, OS X and Linux. A dead key is not used, like a grave accent (`) on a QWERTY keyboard, although some people use a dead key. Depending on the operating system and sometimes the application program being used, there are many ways to generate Latin characters with accents independently of the layout in use. Minor changes to the arrangement are made for other languages. There are a large number of different keyboard layouts used