IMFI is an acronym for "Initial, Medial, Final, Isolated", a writing system in which each character has four different potential shapes:
initial – used for the first character in a word medial – used in the middle of a word final – used for the last character in a word isolated – used for single-letter words The Arabic, Mandaic, Manichaean, Mongolian, N'Ko, and Syriac scripts are examples of IMFI writing systems.
