  This article introduces the package MatchingFields for Macaulay2 and
highlights some open problems. A matching field is a combinatorial object whose
data encodes a candidate toric degeneration of a Grassmannian or partial flag
variety of type A. Each coherent matching field is associated to a certain
maximal cone of the respective tropical variety. The MatchingFields package
provides methods to construct matching fields along with their rings, ideals,
polyhedra and matroids. The package also supplies methods to test whether a
matching field is coherent, linkage and gives rise to a toric degeneration.
