IMFI

 ( Writing Systems ) 

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 script, Mandaic script, Manichaean, Mongolian script, N'Ko, and are examples of IMFI writing systems.