This is an optional input for the groebnerStratum function. It is intended to control whether eliminable parameters are eliminated to obtain the Groebner stratum in a smaller ring.
At present this option is not yet implemented: passing Minimalize => true prints a warning and otherwise behaves exactly like Minimalize => false. See the source-level minimalizeFamily draft in GroebnerStrata.m2 for the current blocker (the parameter ring built by groebnerFamily has a single GRevLex block, but the parameter-elimination logic needs a Lex subblock to identify eliminable parameters).
The object Minimalize is a symbol.
The source of this document is in /build/reproducible-path/macaulay2-1.26.06+ds/M2/Macaulay2/packages/GroebnerStrata.m2:1085:0.