The aim of this LaTeX package is to help debug complicated
macros. This is done by letting the user step through the
execution of some TeX code, going through the details of nested
expansions, performing assignments, as well as some simple
typesetting commands. To use this package, one should normally
run TeX in a terminal. The unravel package requires up-to-date
versions of the l3kernel, l3packages and l3experimental
bundles.