The Theological Markup Language (ThML) is a "royalty-free" XML-based format created in 1998 by the Christian Classics Ethereal Library (CCEL) to create electronic theological texts. Other formats such as STEP and Logos Library System (LLS) were found unacceptable by CCEL as they are proprietary, prompting the creation of the new language. The ThML format borrowed elements from a somewhat similar format, the Text Encoding Initiative (TEI). , CCEL had 650 documents in this format. The advantage of using an XML-based format is that a ThML text can be converted into HTML by using an XSLT stylesheet. Also, standard XML tools can convert to PDF and RTF. , the last Document Type Definition of the format, version 1.04, was released on January 20, 2003. Software The SWORD Project – Bible study software project that supports most operating systems, numerous PDA handhelds, and web services. See also Go Bible application for Java mobile phones Open Scripture Information Standard (OSIS) Zefania XML Bible Markup Language References Bibliography . External links . – electronic Bible application for mobile phones created using ThML and OSIS. . . . Electronic Bibles Electronic publishing XML markup languages