Mlt_parser contains functions for parsing *.mlt files, which contain OCaml toplevel sessions -- i.e., a series of statements followed by their output (in the form of expect tests).

The first of these functions, split_chunks, was extracted out of Toplevel_expect_test, where it's used to divide the toplevel session into "chunks", where each chunk comprises a set of toplevel code phrases (statements separated by ;;) and the expect test they precede.

The second, parse, is used by a tool that converts *.mlt files into *.org files. That tool needs to be able to distinguish OCaml code phrases, expect tests, and blocks of org-mode markup (delimited by [%%org] annotations).