How do you write equations on cfd-wiki?

Is there a free tool for writting the pages off-line?

CFD-Wiki uses a subset of LaTeX to typeset equations. LaTeX uses normal ascii formatting to describe mathematical formats, so the source text can be written in any text editor. LaTeX is a very common format in the academic world and is used by many researchers. To see how a particular formula in CFD-Wiki is written just click on "Edit" to see how the actual text looks.

For some more introduction material on CFD-Wiki equations you can look at for example:

http://en.wikipedia.org/wiki/Help:Formula

If you want to write and see equations off-line you need access to a computer with LaTeX installed. On Windows the most common distribution is MikTex (http://www.miktex.org/) and on Linux/Unix the most common distribution is TeTex (http://www.tug.org/tetex/). There is also a new project which might be better to use, I haven't tried it yet. It is called Tex Live (http://www.tug.org/texlive/).

Thanks.

I are downloading MikTex.

I want to write the things I have needed. They are simply, but have little atention from the cfd comunity.

I gonna write it before I forget "the times that they were not obvious"...