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[0] GBF (January 1998) [1] This is a simple markup using markers in <> pairs, but it is not XML. It was invented independently of both SFM and XML, and does not support all the features of USFM. It has been used in some Bible translation and publication tasks, however, because it encodes a good minimal set of Scripture text types. [2] Yes [4] Easy [5] Converters to HTML, text, XSEM, OSIS, TeX, RTF, etc., exist. The Sword Project supports GBF for import to their Bible study software. [6] Limited in use and scope. [7] GBF should not be used for new projects, except possibly as a step towards conversion to a more standard format. New projects should use USFM, USX, or USFX, instead. [3] 
Yes
Bible File Encoding for Bible Translators, Publishers, and Software Developers
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