Editing Typing (section)

===Thumbing===
A late 20th century trend in typing, primarily used with devices with small keyboards (such as PDAs and Smartphones), is ''thumbing'' or thumb typing.  This can be accomplished using either only one thumb or both the thumbs, with more proficient typists reaching speeds of 100 words per minute.<ref>{{cite news |last1=Blakely |first1=Rhys |title=Thumbs up for speedy smartphone typists |url=https://www.thetimes.com/business-money/technology/article/thumbs-up-for-speedy-smartphone-typists-j78n3jq53 |access-date=7 February 2022 |work=The Times |date=2 October 2019 |archive-date=7 February 2022 |archive-url=https://web.archive.org/web/20220207131552/https://www.thetimes.co.uk/article/thumbs-up-for-speedy-smartphone-typists-j78n3jq53 |url-status=live }}</ref> Similar to desktop keyboards and input devices, if a user overuses keys which need hard presses and/or have small and unergonomic layouts, it could cause thumb tendonitis or other [[repetitive strain injury]].<ref>{{cite news |title="Smartphone thumb" is plaguing more people, doctors say |url=https://www.cbsnews.com/news/smartphone-thumb-texting-tendinitis-plaguing-more-people/ |access-date=7 February 2022 |work=CBS News |date=29 March 2017 |archive-date=7 February 2022 |archive-url=https://web.archive.org/web/20220207131543/https://www.cbsnews.com/news/smartphone-thumb-texting-tendinitis-plaguing-more-people/ |url-status=live }}</ref> The practice of "thumbing" was popularized by the [[BlackBerry]] pager.<ref>{{Cite journal |last=West |first=Joel |last2=Mace |first2=Michael |date=2010-06-01 |title=Browsing as the killer app: Explaining the rapid success of Apple's iPhone |url=https://www.sciencedirect.com/science/article/pii/S0308596109001323 |journal=Telecommunications Policy |volume=34 |issue=5 |pages=270–286 |doi=10.1016/j.telpol.2009.12.002 |issn=0308-5961}}</ref>