texmfstart texexec --pdf --modules ''module name''
</code><br/>
or<br/>
<code>
texmfstart texexec --luatex --modules ''module name''
</code><br/>
which is
a way to make pdf of documentation and code of ''module name'' .
For lua code, I've found convenient<br/>
<code>
mtxrun --internal x-ldx ''module.lua''
texexec --use=x-ldx --forcexml ''module.ldx''
</code><br>
* first, see ''Inside_ConTeXt'' in [http://sandbox.contextgarden.net/Inside_ConTeXt];