algorithms style : need \starttyping with TeX and math feature

[Maurice Diamantini <Maurice.Diamantini@ensta.fr>]

Bonjour à tous,

I'm trying to white some algorithms in natural language
(versus pseudo-computing langage)
I need to keep some "typing" for write space
(i.e. indentation of text) while being able to white
TeX commands (with \xxx{yyy}) and math (like $y_u(t)$)

In fact I'd like some LaTeX algorithms style like feature.

I could do some recursive \startitemize...\stopitemize...
but it is two much verbose, so I thought looking at the
ConTeXt "typing" system

Also, perhaps my request is simply an option of \startlines
which keep not only the lines break, but also the first
spaces of each line (in a verbatim font fors these space)

Thank you for any help!

-- Maurice Diamantini