This operator may be used as a binary operator in an expression like x**y. The user may install binary methods for handling such expressions with code such as
X ** Y := (x,y) -> ...
where X is the class of x and Y is the class of y.
The source of this document is in /build/reproducible-path/macaulay2-1.25.06+ds/M2/Macaulay2/packages/Macaulay2Doc/operators/tensor.m2:21:0.