UnDeclareAllCommutators[]
undeclares all user-defined commutators.
Overview, Commutator, CommutatorExplicit, DeclareNonCommutative, DotSimplify.
[a, b, c, d]
DeclareNonCommutative
[a, b] = x1;
Commutator
[c, d] = x2;
Commutator
[a . b . c . d] DotSimplify
[]
UnDeclareAllCommutators
[a . b . c . d] DotSimplify