[t2t] Latex equations

[Fabrice Lallemand]

Hello !

I'm new to txt2tags.
I would like to create a latex document and a html document from the
same source.
My problem is with math equations in latex : what should I type in
txt2tags in order to obtain, for example, $\frac{1}{2}$ in the latex
output, instead of \$\backslash frac\{1 ... ?
Thanks