Used as an optional argument in makeFreeOIModule to specify shifts of grading.
Permissible values:
The free OI-module $\mathbf{F}^{\text{OI},1}\oplus\mathbf{F}^{\text{OI},2}$ has its basis elements in degree zero.
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The free OI-module $\mathbf{F}^{\text{OI},1}(-3)\oplus\mathbf{F}^{\text{OI},2}(-4)$ has its basis elements in degrees $3$ and $4$.
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The object DegreeShifts is a symbol.
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/OIGroebnerBases.m2:1674:0.