to , , and (classical mode in chart at right), while others use them to represent , , and (general mode at right). The other main difference is in the fourth tyellë below, where those letters with raised stems and doubled bows can be either voiced fricatives, as in Sindarin (general mode at right), or nasalized stops, as in Quenya (classical mode). Ómatehtar In some modes, called ómatehtar (or vowel tehtar) modes, the vowels are represented with diacritics called tehtar (Quenya for 'signs'; corresponding singular: tehta, 'sign'). These ómatehtar modes can be loosely considered abjads rather than true alphabets. In some ómatehtar modes, the consonant signs feature an inherent vowel. These ómatehtar modes can be considered alphasyllabaries. Ómatehtar modes can vary in that the vowel stroke can be placed either on top of the consonant preceding it, as in Quenya, or on the consonant following, as in Sindarin, English, and the notorious Black Speech inscription on the One Ring. Full writing In the full writing modes, the consonants and the vowels are represented by Tengwar. Only one such mode is well known. It is called the "mode of Beleriand" and one can read it on the Doors of Durin. Modes for other languages Since the publication of the first official description of the Tengwar at the end of The Lord of the Rings, others have created modes for other languages such as English, Spanish, German, Swedish, French, Finnish, Italian, Hungarian and Welsh. Modes have also been devised for other constructed languages; Esperanto and Lojban. Tolkien had used multiple modes for English, including full writing and ómatehtar alphabetic modes, phonetic full modes and phonetic ómatehtar modes known from documents published after his death. Encoding schemes Legacy encoding The contemporary de facto standard in the tengwar user community maps the tengwar characters onto the ISO 8859-1 character encoding following the example of the tengwar typefaces by Dan Smith. This implies a major flaw: If no corresponding tengwar font is installed, a string of nonsense characters appears. Since there are not enough places in ISO 8859-1's 191 codepoints for all the signs used in tengwar orthography, certain signs are included in a "tengwar A" font which also maps its characters on ISO 8859-1, overlapping with the first font. For each tengwar diacritic, there are four different codepoints that are used depending on the width of the character which bears it. Other tengwar typefaces