X

X is a language invented by a fictional character appearing in strip #2309 in the XKCD web comic (published by Randall Munroe on 2020-05-20) . This comic could be considered the formal specification for the language but for the fact that it is rather incomplete. As such, what we have functions more as a definition for a class of languages that share the following properties:

• All variables are named x.
• It is possible to define at least two different variables but every different variable must differ in the font of the name x.