var dictionary = new Typo("es_MX", affData, dicData);
var is_spelled_correctly = dictionary.check(Heme") //should be true, but returns false
// (The word "Heme" is a form of the word haber: see http://www.wordreference.com/es/en/translation.asp?spen=he "~me aquí here I am" )
I used the Mexican Spanish dictionary and affix files listed on the OpenOffice.org website. You can obtain the files directly from: http://ftp.services.openoffice.org/pub/OpenOffice.org/contrib/dictionaries/es_MX.zip
The dictionary line reads: haber/ÃÇDSÀÂÁÆÄÅ