Editing Constructed writing system (section)

===For technical purposes===
Several writing systems have been devised for technical purposes by specialists in various fields. One of the most prominent of these is the [[International Phonetic Alphabet]] (IPA), used by linguists to describe the sounds of human language in exhaustive detail. While based on the [[Latin alphabet]], IPA also contains invented letters, Greek letters, and numerous diacritics. Other scripts, such as John Malone's [[Unifon]],<ref name = "Unifon">{{cite web|first=Michael |last=Everson |url= http://std.dkuug.dk/JTC1/SC2/WG2/docs/n4195.pdf |title=Preliminary proposal to encode "Unifon" characters in the UCS }}</ref> Sir [[James Pitman]]'s [[Initial Teaching Alphabet]],<ref name="ITA">{{cite web |title=What is ITA? |url=http://itafoundation.org/about-us/what-is-i-t-a/ |website=Initial Teaching Alphabet Foundation |publisher=ITA Foundation |access-date=17 July 2022}}</ref> and [[Alexander Melville Bell]]'s [[Visible Speech]]<ref name="Winzer">{{cite book |last1=Winzer |first1=Margret A |title=The History Of Special Education: From Isolation To Integration |date=1993 |publisher=Gallaudet University Press |location=Washington, DC |isbn=978-1-56368-018-2}}</ref> were invented for [[pedagogy|pedagogical]] purposes. [[Yerkish]], a communication system created for use by non-human primates, involves a system of lexigrams- visual symbols corresponding to various objects and ideas.<ref name=interactive>{{cite web |title=Interactive Lexigram, History of Ape Language |url=http://www.greatapetrust.org/science/history-of-ape-language/interactive-lexigram/ |website=[[Great Ape Trust]] |archive-url=https://web.archive.org/web/20100520131446/http://www.greatapetrust.org/science/history-of-ape-language/interactive-lexigram/ |archive-date=May 20, 2010 |date=2010}}</ref> [[Shorthand]] systems may be considered constructed scripts intended to facilitate speed and ease of writing.