Returns the object being acted upon. Depending on the action, this object may be a Complex, a PolynomialRing, a QuotientRing, an Ideal, or a Module.
The source of this document is in /build/macaulay2-88fgJW/macaulay2-1.25.11+ds/M2/Macaulay2/packages/BettiCharacters.m2:2859:0.