Hebrew ASCII from the 1200s. Or micrography, as it’s also called.

On this page, the scribe has identified himself as Eliezer son of Samuel by creating a calligram in the shape of the letters of his own name. The calligram (lines of text of unequal length written in parallel rows and forming a design) is a continuation of the text of the previous page concerning the laws of the holiday of Sukkot.