Editing Typewriter (section)

=== Correction fluid ===
{{Main|Correction fluid}}
In the 1950s and 1960s, [[correction fluid]] made its appearance, under brand names such as [[Liquid Paper]], [[Wite-Out]] and [[Tipp-Ex]]; it was invented by [[Bette Nesmith Graham]]. Correction fluid was a type of opaque, white, fast-drying paint that produced a fresh white surface onto which, when dry, a correction could be retyped. However, when held to the light, the covered-up characters were visible, as was the patch of dry correction fluid (which was never perfectly flat, and frequently not a perfect match for the color, texture, and luster of the surrounding paper). The standard trick for solving this problem was [[photocopying]] the corrected page, but this was possible only with high quality photocopiers.<ref>{{Cite web |last=Mejia |first=Zameena |date=2018-07-23 |title=How inventing Liquid Paper got a secretary fired and then turned her into an exec worth $25 million |url=https://www.cnbc.com/2018/07/19/inventing-liquid-paper-got-a-secretary-fired-and-then-made-her-rich.html |access-date=2022-04-27 |website=CNBC |language=en}}</ref>

A different fluid was available for correcting stencils. It sealed up the stencil ready for retyping but did not attempt to color match.<ref name="MimeoCorrect">{{Cite web |title=How to correct a mimeograph stencil |url=http://www.sil.org/lingualinks/literacy/implementaliteracyprogram/howtocorrectamimeographstencil.htm |url-status=live |archive-url=https://archive.today/20121016144730/http://www.sil.org/lingualinks/literacy/implementaliteracyprogram/howtocorrectamimeographstencil.htm |archive-date=2012-10-16 |access-date=2011-05-10 |website=LinguaLinks Library |publisher=SIL International}}</ref>