pspell_clear_session() clears the current session.
The current wordlist becomes blank, and, for example, if you try to save
it with pspell_save_wordlist(), nothing happens.
pspell_add_to_personal($pspell_link, "Vlad"); pspell_clear_session($pspell_link); pspell_save_wordlist($pspell_link); //"Vlad" will not be saved ?>