adjoinVariables(..., Variable => "T")adjoinVariables adjoins a new DG generator for each cycle in its input list. The Variable option specifies the base name used for these new generators.
The source of this document is in /build/reproducible-path/macaulay2-1.26.05+ds/M2/Macaulay2/packages/DGAlgebras/doc.m2:9575:0.