Shortest program that demonstrates a language's complete syntax The Challenge

Write the shortest possible program that demonstrates a programming language's entire syntax: statements, expressions, operators, reserved words, etc.

Take the language's grammar (usually in EBNF) and create a program that uses all of it.

The program doesn't have to do anything particularly useful, but if it does that's a bonus :)

Rules


You must use all of the language's syntax: every type of statement, expression, operator, keyword, etc the language defines.
It must be able to be run with no dependencies, except for the standard library included with the language (it doesn't need to use the entire standard lib though).
Include a link to the language spec you used (e.g. here is the Python 2.7 grammar).
Jot (2 chars)

10


http://semarch.linguistics.fas.nyu.edu/barker/Iota/#Goedel