olemus
(a) kirjaviga
teksti kirjutamisel tekkinud juhuviga
Wiktionary:
typo, typographical error
1. a mistake made during the process of typing, especially one caused by a slip of the fingers
(b) trükiviga
trükiprotsessis tekkinud juhuviga
Wiktionary:
typo, typographical error
2. a mistake made during the process of typesetting

ülevaateid
https://medium.com/snipette/types-of-typos-aeee34ab0424

https://universaldependencies.org/u/overview/typos.htm

https://en.wikipedia.org/wiki/Typographical_error

https://www.flexjobs.com/blog/post/resume-tip-proofread-your-resume-for-typos-and-misspellings-v2/

https://audiotranscriptioncenter.com/2018/01/top-10-most-expensive-typos-in-history/

tõrje
https://www.webhostingsecretrevealed.net/blog/web-copy-writing/top-five-ways-to-catch-typos-and-errors-in-your-own-writing/