Word heaping is a technique used for text justification in Arabic script, in which one word can be placed over another to save space on the line.[1]

Heap ligatures in Unicode

Arabic Presentation Forms-A has a few characters defined as "word ligatures" for terms frequently used in formulaic expressions in Arabic. A few example ligatures that feature heaping are shown below:[n 1]


  1. ^ Mohamed Jamal Eddine Benatia, Mohamed Elyaakoubi and Azzeddine Lazrek (2006). "TUGboat, Volume 27 (2006), No. 2—Proceedings of the 2006 Annual Meeting: Arabic text justification" (PDF). TeX Users Group.


  1. ^ May not sometimes render properly without font support

See also