The IFM file uses code names to refer to vowels and consonants. For example, the ``I'' char in the input text for devanagari refers to the ``ii'' code name in the IFM file (in this case, so does the input char pair ``ii''). Figure 1 shows the relationship between the input vowel text forms accepted by the lexer, and the code name for the vowels in the IFM file. (Note that no indian language script makes use of the complete set of code names available in the IFM file.)
(Figures 1 & 2 may be out-of-date, see the files imap.h and ilex.l for correct info.)
Similarly, the consonant names are as given in figure 2. Again, only a subset of these may be used by a particular indian language script.