The Hepburn spelling mma is likely to be rendered , not the intended (nma). This is not an issue for revised Hepburn, which eliminates the -mm- forms in favor of -nm-. Moraic n, , can be entered as nn, n or n'. While moraic n can be typed in simply as n in some cases, in other cases it is necessary to type in a non-ambiguous form to prevent the IME from interpreting the n as belonging to a kana from the na column ( na, ni, nu, ne, no). Phonetic names can often be used for Japanese typographic symbols not found on standard keyboards. For example, in some IMEs ～ can be entered as nami (wave) or kara (from) and an ellipsis (...) can be entered as tenten (point point). Phonetic accuracy Unlike Kunrei and Hepburn, wāpuro style is based on a one-to-one transcription of the kana. Wāpuro thus does not represent some distinctions observed in spoken Japanese, but not in writing, such as the difference between (long vowel) and (o+u). For example, in standard Japanese the kana can be pronounced in two different ways: as meaning "king" (), and as meaning "to chase" (). Kunrei and Hepburn spell the two differently as ō and ou, because the former is a long vowel while the latter has an o that happens to be followed by a u; however, wāpuro style simply transcribes the kana and renders them both as ou. Likewise, the irregularly spelled particles wa (), e () and o () must be entered as written (ha, he and wo respectively), not as pronounced (unlike Kunrei and Hepburn, which transcribe the pronunciation). See also Japanese language and computers References Romanization of Japanese Japanese writing system