The spelling of the word "Heanno" is a bit confusing at first glance. However, using the IPA phonetic transcription can help to better understand the spelling of this word. In IPA, "Heanno" would be pronounced as /hiːˈænəʊ/. The use of the double "e" in "Hee" indicates a long "e" sound, while "anno" is pronounced with a short "a" sound followed by a long "o" sound. Though the spelling may seem unusual, it is simply a matter of phonetic representation.