Final answer:
Traditional paper memos do not have a subject line but include a salutation, date, and multiple paragraphs.
Step-by-step explanation:
Traditional paper memos do without a subject line. They typically open with a salutation that includes a person's title or honorific, such as Mr., Ms., or Dr. Memos also include a date to indicate when they were written. In terms of structure, memos usually consist of multiple paragraphs, each addressing a specific point or topic.