Klerer-May System is a programming language created in 1964.
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The Klerer–May System is a programming language developed in the mid-1960s, oriented to numerical scientific programming, whose most notable feature is its two-dimensional syntax based on traditional mathematical notation. For input and output, the Klerer–May system used a Friden Flexowriter modified to allow half-line motions for subscripts and superscripts. The character set included digits, upper-case letters, subsets of 14 lower-case Latin letters and 18 Greek letters, arithmetic operators (+ − × / |) and punctuation (. Read more on Wikipedia...