Hi,

2008/9/23 Сергей Плаксин <serp@stork.ru>

>
> what is pa_op.cmo?


It's a CamlP4 parser for the extension of ocaml classical syntax  with
streams parsers. Decoding proceeds as follows:

  "pa_" stands for parser, "o" for ocaml syntax, and "p" for stream parsers.

-- MM