How to change the modifier symbol in the receipt?

[MAGGIE72]

If you look at the modifiers in the receipt, it all starts with the symbol "+", instead of "+" can we have the option to change it to others like "-" or "x" for each modifier?

Coz it confusing, sometimes the "+" for us is extra ingredients, and "X" means remove from the dishes

So right now to do that we had to copy unique symbol from internet to better indicate to the kitchen, but the "+" in front is still there which is why it's confusing~

[Georg]

Hello dear user
At the moment, it is not possible to change  symbol for the modifiers to another symbol or to remove it completely, but I will send it as a feature suggestion to our team. 
Thank you very much for your feedback and the detailed explanation.