The function ClearNotations[]

Syntax of clear notations.

If you would like to re-enter a set of notations or would like to make a "clean start" you can use the ClearNotations[] command to erase all notations, symbolizations and infix notations present in the system. Using ClearNotations[] should not affect other packages or definitions you have made to MakeExpression or MakeBoxes.

Wipe all notations, symbolizations and infix notations.