The Mongolian Horizontal Square Script, (Хэвтээ Дөрвөлжин бичиг / Xäwtää Dörböljin in Mongolian) was invented in the late 17th century by Bogdo Zanabazar, a Mongolian monk and scholar, who also created the Soyombo script. The Mongolian Horizontal Square Script was based on the Tibetan script, was rediscovered in 1801 it is uncertain how it was used. Only a few documents in this script survive.
When the are used independently of vowels are indicated by adding a diacrit to the symbol for a. The diacritics are attached to consonants when the vowels follow consonants
Source: ftp://ftp.dante.de/pub/tex/languages/mongolian/mxd/doc/mxd4tex.pdf
Information about the Mongolian Horizontal Square Script
http://std.dkuug.dk/jtc1/sc2/wg2/docs/n4041.pdf
Information about the Mongolian language and Mongolia
http://en.wikipedia.org/wiki/Mongolian_language
http://www.mongoluls.net
http://www.sytra.cn/mongolian-translations-service.html
http://www.cjvlang.com/Writing/writmongol/mongolalpha.html
http://silverhorde.viahistoria.com/main.html
Online Mongolian lessons
http://mongoluls.net/mongolianlanguage/
https://www.glovico.org/en/mongolian
Online Mongolian dictionaries
http://www.bolor-toli.com
http://www.linguamongolia.co.uk/searchdict.html
http://asuult.net/dic/
http://dic.miniovoo.net
Mongolian-English Dictionary - commercial dictionary software for Uighur-script Mongolian
http://www.linguamongolia.co.uk/soft1.html
Mongolian phrases
http://mongoluls.net/mongolianlanguage/
http://www.viahistoria.com/SilverHorde/phrases.html
http://wikitravel.org/en/Mongolian_phrasebook
http://www.byki.com/category/Mongolian/a/
http://www.youtube.com/watch?v=ofPsOPFUlv4
Online Mongolian news
http://www.mongolnews.mn
Online Mongolian radio
http://www.mnb.mn
http://www.mglradio.com
Ahom, Badaga, Balinese, Batak, Baybayin (Tagalog), Bengali, Brahmi, Buhid, Burmese, Chakma, Cham, Dehong Dai, Devanagari, Dhives Akuru, Ethiopic, Evēla Akuru, Gondi, Grantha, Gujarati, Gupta, Gurmukhi, Hanuno'o, Javanese, Jenticha, Kaithi, Kannada, Kharosthi, Khmer, Khojki, Kulitan, Lanna, Lao, Lepcha, Limbu, Lontara/Makasar, Malayalam, Manpuri, Modi, Mongolian Horizontal Square Script, New Tai Lue, Oriya, Pahawh Hmong, Pallava, Phags-pa, Ranjana, Redjang, Shan, Sharda, Siddham, Sindhi, Sinhala, Sorang Sompeng, Sourashtra, Soyombo, Sundanese, Syloti Nagri, Tagbanwa, Takri, Tamil, Telugu, Thai, Tibetan, Tikamuli, Tocharian, Tolong Siki, Tulu, Varang Kshiti