This an optional input for the groebnerStratum function. It takes values $true$ and $false$. When assigned the value $true$, eliminable parameters are eliminated to obtain the groebner basin / stratum in a smaller ring. When assigned the value $false$, no parameters are eliminated, and the groebner basin / stratum is computed in a ring containing all the parameters.
The object Minimalize is a symbol.
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/GroebnerStrata.m2:1059:0.