which lowercase letters should be mapped to combinations of the uppercase letter and uppercase iota ( → ). This rule not only replaces the representation of a monophthong with that of a diphthong, but it also destroys the reversibility of any capitalization process in digital environments, as the combination of uppercase letter and uppercase iota would normally be converted back to lowercase letter and lowercase iota. It is therefore strongly recommended, both for the integrity of text and for the practical compatibility with digital environments, that lowercase letter and iota subscript should be capitalized in all situations and contexts as uppercase letter and iota adscript. A future revision of the above-mentioned Unicode stipulation is linguistically stipulated and digitally inevitable, as its application is both destructive to the text and impractical in digital applications. In the ASCII-based encoding standard Beta Code, the iota subscript is represented by the pipe character "|" placed after the letter. See also Greek diacritics Hypodiastole References Greek-script diacritics Greek letters Koine Greek