INTREAL presents an index of metanotions from the specifications of vintage programming language, Algol 68. Algol was an innovative language for its time, allowing for multiple layers of meta-programming, but ultimately did not achieve wide adoption. The index presents a production rule for each metanotion, composed of lower level notions and hypernotions.

Highlighting the creativity embedded in formal languages, the piece is printed in Volume Magazine, Issue 52 - ‘The End of Informality’.