- Atyaaf is an Arabic word that translates to ‘Spectrums’. It is the name of this Arabic display font which Incorporates optical illusion with penmanship. Letterforms of Atyaaf are structured from seven parallel lines. These lines are clearly seen when the letters are enlarged, and they are rendered according to the standard directions of Arabic handwriting. But in small point size, the lines seem to connect and portray a traditional calligraphy effect.