IMFI

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 and Syriac script are examples of IMFI writing systems.