Someone in the humanities must be interested in OMDoc. I was really surprised to find a reference to OMDoc in the section “Formulæ and Mathematical Expressions” guidelines (a.k.a. specification) for TEI. TEI (Text Encoding Initiative) is the standard semantic markup language for humanities, social sciences and linguistics, much like DocBook for technical manuals. All that TEI itself has is an element <formula notation=”…”/>, where notation refers to the language in which the formula is represented. But the guidelines refer to some mathematical markup languages, from which the document author is asked to “make an informed choice”:
- TeX – the obvious candidate, also used in some examples
- MathML – the obvious candidate when XML is desired. They give one Presentation MathML example but also mention Content MathML.
- OpenMath – much less expected. Nice to see that here. Oh the other hand, the links to the OpenMath standard are outdated. I should probably report that.
- OMDoc – I didn’t expect that at all.