I forgot to include the relevant external links in my prior email.
They are included below.

On Tue, Jun 24, 2008 at 11:43 AM, Hezekiah M. Carty
<hcarty@atmos.umd.edu> wrote:
> I toyed around with a simple extension to the pa_float example on the
> camlp4 wiki.  The modified version is here:
>
> http://0ok.org/code/ocaml/pa_float.ml

The original pa_float is on the camlp4 wiki:

http://brion.inria.fr/gallium/index.php/Pa_float

> I think Zheng Li released an extension similar to pa_context, but I am
> not sure how similar or different it is in function.

Zheng Li's extension is called pa_scope, and can be found here:

http://www.pps.jussieu.fr/~li/software/index.html#pa_scope

I included the camlp4 + toplevel bug information in a separate email.

Hez