Editing TeX (section)

==Use of TeX==
In several technical fields such as computer science, mathematics, engineering and physics, TeX has become a [[de facto standard]]. Many thousands of books have been published using TeX, including books published by [[Addison-Wesley]], [[Cambridge University Press]], [[Elsevier]], [[Oxford University Press]], and [[Springer Science+Business Media|Springer]]. Numerous journals in these fields are produced using TeX or LaTeX, allowing authors to submit their raw manuscript written in TeX.{{sfn|Beebe|2004|p=10}} While many publications in other fields, including dictionaries and legal publications, have been produced using TeX, it has not been as successful as in the more technical fields, as TeX was primarily designed to typeset mathematics.

When he designed TeX, Donald Knuth did not believe that a single typesetting system would fit everyone's needs; instead, he designed many hooks inside the program so that it would be possible to write extensions, and released the source code, hoping that the publishers would design versions tailoring to their own needs. While such extensions have been created (including some by Knuth himself),<ref name="autogenerated1">{{Citation|last1=Knuth|first1=Donald E |title=Mixing Right-to-Left Texts with Left-to-Right Texts|date=1987 |url=http://www.tug.org/TUGboat/Articles/tb08-1/tb17knutmix.pdf|journal=TUGboat|volume=8|pages=14–25 |last2=MacKay|first2=Pierre}}.</ref> most people have extended TeX only using macros and it has remained a system associated with technical typesetting.<ref>{{Citation|last=Knuth|first=Donald E|title=Questions and Answers I|date=1996|journal=TUGboat |volume=17 |pages=7–22}}.</ref><ref>{{Citation|last=Knuth |first=Donald E|title=Questions and Answers II|date=1996|journal=TUGboat|volume=17|pages=355–367}}.</ref><ref name="DigitalTypography"/>

===TeX for chemistry notation===
{{See also|Structural formula}}
Packages like [[mhchem]], [[XyMTeX]], [[chemfig]], and chemmacros for typesetting [[chemical equation]]s, [[Chemical structure|structures]], and [[Chemical reaction#Reaction types|reactions]] in LaTeX.<ref>{{cite web | url=https://emleddin.github.io/comp-chem-website/Otherguide-chemistry-latex.html | title=Helpful LaTeX Packages for Chemistry &#124; Computational Chemistry Resources }}</ref>