olemus
keel, mis pole tekkinud loomuliku arenguga,
vaid on teadlikult loodud mingiks otstarbeks
=
a language instead of having developed naturally, is consciously devised for some purpose

ülevaateid
https://en.wikipedia.org/wiki/Constructed_language

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

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

https://www.translationdirectory.com/articles/article1912.php

vt ka
- formaalkeel
- metakeel
- pasigraafia
- programmikeel