x &= y
This operator may be used as a binary operator in an expression like x&=y. The user may install a method for handling such expressions with code such as
X &= (x,y) -> ...
where X is the class of x.
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/Macaulay2Doc/operators/augmented_assignment.m2:39:0.