universalIdeal(..., Vars => {P, Q, R, S})
universalIdeal(..., Vars => {a_0..a_12})
universalIdeal(..., Vars => vars(-10..-3))
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/SlackIdeals.m2:3032:0.