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 the image shown above, especially as regards the characters available using the or keys. (on the upper row) produces the "°" sign, and produces the "€" sign. The digit keys produce "©@£$∞§|[]≈" with and "¡"¥¢‰¶\{}≠" with . On Linux systems, the Swedish keyboard may also give access to additional characters as follows: Several of these characters function as dead keys. Today the majority of Turkish keyboards are based on QWERTY (the so-called Q-keyboard layout), although there is also the older F-keyboard layout specifically designed for the language. The United Kingdom and Ireland use a keyboard layout based on the 48-key