Hardly optimal, to be honest. The QR code nature is because all diacritics are not used at all, period. Those dots actually signify, you guessed it, different

Hardly optimal, to be honest. The QR code nature is because all diacritics are not used at all, period. Those dots actually signify, you guessed it, different letters (ironically, they are grouped into Arabic by articulation: b, t, and th are letters in Arabic, same shape and different dots; there order in the alphabet are grouped because you make them with the same part of your mouth). Problem with that is, grokking text is difficult without a lot of practice. I am not a native Arabic speaker, and reading that stuff, even if I can read novels, the Quran, and weird pre-Islamic poetry (vocab is very different) would take me days to decipher if written in that script. What is more funny is that there are not even short vowels in Kufic script. So after I learn to read and know contextually which letters are which, I would only know the consonants. And the vowels in Arabic are amazingly important (same consonant, different vowels = same word root, but meaning can change from book to dest to library to writer, for example), so Kufic is an easy way to bring an Arabic student to suicide.