×5 (pronounced Times Five) is a simple typeface, constructed from a 5 by 5 grid of squares. This concept is far from new: Web designers will remember Kottke’s Silkscreen, but examples can even be found in Bauhaus-era tiles. What makes this version different/special, is that the grid is used recursively to construct more complex structures. These structures are self-similar, and behave like fractals in that sense.
Also, other rules and variations can be introduced to create non-standard glyphs. These fall into two categories: static (red) and dynamic (blue). The static ones represent characters like ligatures and monograms that do not have a code point in the Unicode standard. The dynamic ones include extra algorithms in order to introduce principles of Nivan figures and randomness, et al.