A library of advanced list processing functions such as Filter, Map, Foldl/Foldr, Zip/Unzip etc. mostly borrowed from the Hakell programming language. Makes list processing much easier than with the built-in functions. This is the latest System RPL version for the HP 49G/49g+/50g, based on Luis Morales Boisset's 0.1b System RPL version of Jarno Peschier's GoferLists 0.1 library. The new version fixes a couple of minor bugs and adds a bunch of additional operations.