The Persian dictionary uses the wrong Kaf for its
words. It uses ARABIC LETTER KAF (U+0643), which is a
wrong character for Persian data. As ISIRI 6219:2002,
the Iranian standard on Perian character encoding based
on Unicode specifies, the character should be replaced
in the Persian word list by ARABIC LETTER KEHEH (U+06A9).
The mistake currently results in all Persian words
using the letter Kaf come out as incorrect, while it
results in Persian documents incorrectly and
non-standardly using the character U+0643 possibly
passing the spelling check.