I was a little confused by the link; the main image is a screenshot of what looks like a fairly ordinary Arabic text editor. I think the calligraphy referenced

I was a little confused by the link; the main image is a screenshot of what looks like a fairly ordinary Arabic text editor. I think the calligraphy referenced here is the tile mosaic in the photograph. There's more photos of geometric / artistic typesetting of QLB code in Nasser's tweets and blog. Is this Kufic-like calligraphy being autogenerated from the source code? Or is it laid out by hand?