I can understand well. Thank you, Phi!

Taji, This is standard on many invoices. I'm not sure how they can write it more clearly. portion = part = section remittance = payment contact information = your address Your paper invoice has 2 parts: - One part has the details of the charges and the amount, this is for you to keep; - One part has the mailing address of the college billing office, you tear this part off, and mail it with your payment. This is called the "remittance portion". Usually, this part has a note like "detach and mail with your remittance", it may have a dotted line and a picture of a pair of scissors (to say you cut this part off). They are saying if your address is not correct on the invoice, you can note the changes on this "remittance paper part", since you're mailing it back to them, they will update their records with your correct address. PS. If you do not find this in a dictionary, sometimes a search on the internet will get you an explanation.

Thank you very much!

You are correct. It is not clearly written. I am sure, however, they are just telling you to attach a note to the part of the invoice statement that you typically send in along with your payment (remittance).