Ni hao and hello, redox wrote:
\usemodule[math] or \usemodule[newmat] or \usemodule[nath]
For most equation, the plain TeX commands incl. \eqalign and \eqalignno should be enough. (For the latter: \formulanumber{} and \formulasubnumber are useful.)
For nath, one should use the LaTeX documentation; for details see: http://contextgarden.net/Math_with_nath Analogously for AMS math functionality, see http://contextgarden.net/Math_with_amsl
".... At this moment you can load the following modules: units " I noted that the version of "ConTeXt an excursion" is "May 27, 1999", so I think it's also a little out-of-date.
True, but all documentation is soon out of date. For the modules, you quoted, see also: http://contextgarden.net/Math For bold math symbols: http://contextgarden.net/Bold_Math For m-newmat, read the source code; m-newmat is based on/inspired by AMS's macropackage. http://source.contextgarden.net/tex/context/base/m-newmat.tex (I have to admit, I cannot find m-math.tex/t-math.tex anywhere.) Regards, Tobias