BRFplus removing special characters

Hi All.

I'm just getting started using BRF+.

Does anyone know a way to remove special characters from a string?

I created a formula expression using nested REPLACE_SUBSTRING, but it seems like I should be able to use one REPLACE_SUBSTRING function and give a list where the formula would replace any/all values in the list with the empty string.

Any help would be greatly appreciated!

Thanks,  Mike