Customer Statements (Transactions) Report. Remove the word invoice

Can anyone help me remove the word invoice, but leave in the reference number, from the Customer Statements (Transactions) Report.
I cannot find a way of getting into the template that is used.
Any help most appreciated

Steve

You cannot modify the content of statements. Why do you want to remove Invoice? When it appears, it is defining the type of transaction for that entry. How would a customer know what 43546, for example, referred to? That could be a bank transaction, an invoice, a credit note….

We are a charity and do not use the word invoice. We would like to change it to the word reference.
Steve

Well, in accounting terms, an invoice is an invoice. And the statement refers to it as what it is. So if you want some other language, you will have to generate your own statements outside of Manager.