Liquid Paper Liquid Paper Liquid Paper is an American brand of the Newell Brands company marketed international that sells correction fluid, correction pens, and correction tape. Mainly used to correct typewriting in the past, correction products now mostly cover handwriting mistakes. In 1956, Bette Nesmith Graham, the mother of The Monkees' Michael Nesmith, invented the first correction fluid in her kitchen. Working as a typist, she used to make many mistakes and always strived for a way to correct them. Starting on a basis of tempera paint she mixed with a common kitchen blender, she called the outcome fluid "Mistake Out" and
Not a typewriter replaced with the more general ioctl (I/O control) call, the "ENOTTY" error code was retained. "Typewriter" was what early Unix systems called a terminal. This usage goes all the way back to the First Edition of the Unix Programmer's Manual, dated November 3, 1971. For example, the description of the "hup" command was "hup hangs up the phone on the typewriter which uses it." The abbreviation TTY, which occurs widely even in modern UNIX systems, stood for "Teletype." The generic term "typewriter" was probably used because "Teletype" was a registered trademark of AT&T subsidiary Teletype Corporation and was too specific.