The package was developed to provide flexible lists, whose ordering can be altered on the fly.
The implementation involves a pile of lambda-calculus and list-handling macros of an incredibly obtuse nature. The TUGboat paper serves as a manual for the macros.
Having said all of which, confidence is enhanced by the knowledge that the TeX code was formally verified.
The author is Alan Jeffrey.
License: lppl1.2 Version: 1.0a Catalogued: 2015-08-03