The Buckwalter Transliteration is an ASCII only transliteration scheme, representing Arabic orthography strictly one-to-one, unlike the more common romanization schemes that add morphological information not expressed in Arabic script. Thus, for example, a ' will be transliterated as "w" regardless of whether it is realized as a vowel or a consonant . Only when the ' is modified by a "" () does the transliteration change to "&". This allows the user to type or convert text exactly as it is seen.