(especially of a document 尤指文件 prepared in order to show the usual way of doing something or to provide a standard method 按惯例的；惯常的；例行的 a pro forma letter 格式信件 pro forma instructions 常规指示
(of a document 文件 sent in advance 预开的；预先通知性的；形式上的 a pro forma invoice (= a document that gives details of the goods being sent to a customer) 形式发票
done because it is part of the usual way of doing something, although it has no real meaning 流于形式的；摆样子的 a pro forma debate 流于形式的辩论
Word Originearly 16th cent.: from Latin.