What is the point of the constants in redux?

For example from this example: export const ADD_TODO = 'ADD_TODO' export const DELETE_TODO = 'DELETE_TODO' export const EDIT_TODO = 'EDIT_TODO' export const COMPLETE_TODO = 'COMPLETE_TODO' export const COMPLETE_ALL = 'COMPLETE_ALL' export const CLEAR_COMPLETED = 'CLEAR_COMPLETED' It's not like you're saving characters. The variable name is exactly the same as the string, and will never change. I u