Currently, the only way to download a credit note (which has it's own unique ID and notes) is when completing an RMA.
However, there are times where we need to manually add a credit note to a customer account. When manually adding a credit, there is no option to enter additional notes, nor is it possible to download a credit note which we can then pass onto the customer.
Manual credits do show up on the customer statement, but trying to remember why credits were added starts becoming difficult very quickly.