pspell_add_to_personal() adds a
word to the personal wordlist. If you used
pspell_new_config() with
pspell_config_personal() to open the dictionary, you
can save the wordlist later with
pspell_save_wordlist(). Please, note that this
function will not work unless you have pspell .11.2 and
aspell .32.5 or later.