dīwānī

Persian dīwān meant register, official record, or council chamber. From dīwān came dīwānī: the script style used for the official documents of the dīwān, the government office. Diwani script was developed in the Ottoman chancery during the 15th and 16th centuries as a deliberate security measure — its extreme cursive forms, compressed letterforms, and decorative interweaving made it genuinely difficult to read or forge without specific training.

Ottoman chancellors (nişancı) used Diwani for imperial decrees, land grants, and official correspondence. The degree of ornamentation indicated the document's importance: ordinary Diwani was challenging; Jali Diwani — the most ornate variant, used for the most significant imperial documents — bordered on the abstract, with letters interwoven into patterns that required expert eyes to decode.

The Mughal court in India developed its own variant of Diwani script for Persian-language administration, the official language of the Mughal Empire. Revenue records, land grants, and imperial orders were written in Diwani. The British East India Company, when it acquired the diwani (right to collect taxes) in Bengal in 1765, had to train scribes to read and produce the script.

Diwani calligraphy is now practiced as a fine art form throughout the Arab world, Turkey, Iran, and South Asia. Its difficulty is its beauty: the letters' compressed, interleaved forms create visual patterns of extraordinary complexity. What was developed as a forgery-prevention measure became an aesthetic tradition.