In most dialects of English, the name for the letter is pronounced /eɪtʃ/ and spelled aitch[1] or occasionally eitch. Pronunciation /heɪtʃ/ and hence a spelling of haitch is usually considered to be h-adding and hence nonstandard. It is, however, a feature of [[Hiberno-English][2] and other varieties of English, such as those of Malaysia and Singapore. In Northern Ireland it is a shibboleth as Protestant schools teach aitch and Catholics haitch.[3] In Australia, this has also been attributed to Catholic school teaching.[4] The perceived name of the letter affects the choice of indefinite article before initialisms beginning with H: for example “an HTML page” or “a HTML page”. The pronunciation /heɪtʃ/ may be a hypercorrection formed by analogy with the names of the other letters of the alphabet, most of which include the sound they represent.[5]