There is now a fifth variant for detri:
http://decapode314.free.fr/ocaml/detris.html
This fifth one outputs .html, in-stead of console.
If you took a previous version for the console, it was already something you could do by-yourself easily rewriting the console esc-chars to html, but now there is a ready-made one.
(There is also a small tutorial, but it should be re-written,
http://decapode314.free.fr/ocaml/detri/tut/detri-tut.html
)