OCR software may be poorly suited for several non-English languages, or may fail due to older styles of typesetting (the old German “Fraktur” is notorious in this regard). Also, it is necessary to have proofreaders who are fluent in the language, to assure the eBook is enjoyable and reasonably free of errors. Despite these challenges, nearly 20% of the collection is in a language other than English, with 65 separate languages or dialects other than English. This emphasis on language diversity continues today, and is limited only by the willingness of volunteers to submit copyright clearances and prepare items for distribution. Table 1: Language counts as of August 1, 2016, for 52615 eBooks. # of eBooks Language code Language or dialect 43095 en English 2711 fr French 1469 de German 1421 fi Finnish 739 nl Dutch 678 it Italian 540 pt Portuguese 504 es Spanish 427 zh Chinese 219 el Greek 128 sv Swedish 112 hu Hungarian 112 eo Esperanto 102 la Latin 66 da Danish 60 tl Tagalog 31 pl Polish 31 ca Catalan 22 ja Japanese 17 no Norwegian 11 cy Welsh 10 cs Czech 9 ru Russian 7 is Icelandic 7 fur Friulian 6 te Telugu 6 he Hebrew 6 enm Middle English 6 bg Bulgarian 4 sr Serbian 4 ang Old English 4 af Afrikaans 3 nai North American Indian 3 nah Nahuatl 3 ilo Iloko 3 ceb Cebuano 2 ro Romanian 2 nav Navajo 2 myn Mayan Languages 2 mi Maori 2 grc Greek, Ancient 2 gla Gaelic, Scottish 2 ga Irish 2 fy Frisian 2 arp Arapaho 1 yi Yiddish 1 sl Slovenian 1 sa Sanskrit 1 rmr Calo 1 oji Ojibwa 1 oc Occitan 1 nap Napoletano- Calabrese 1 lt Lithuanian 1 ko Korean 1 kld Gamilaraay 1 kha Khasi 1 iu Inuktitut 1 ia Interlingua 1 gl Galician 1 fa Farsi 1 et Estonian 1 csb Kashubian 1 br Breton 1 bgi Giangan 1 ar Arabic 1 ale Aleut EVOLUTION OF MASTER SOURCE FORMATS Plain text was the first master source type/format for Project Gutenberg, and remains important today. Plain text is readable on any device. Plain text is printable, and efficient to store (including for compression, or sharing by email). For decades, the International Standards Organization has provided standard computerized encoding for the basic American standard codes (ASCII) and extensions for accents and other special characters (Latin1 or ISO 8859-1). Encoding exists for other languages, and Unicode (with 8- and 16-bit variations) provides encoding for larger groups of characters.