Related Clues:

• Most crosswords have one
• History class assignment
• Long English assignment
• Common college admissions requirement
• Potential creditor's request
• Exam portion, perhaps
• Recurring idea
• Newscaster's story
• Thoreau composition
• "Civil Disobedience" is one
• Park feature, at times
• A Sunday crossword usually has one
• Describe with a bang
• Motif or subject
• Subject matter, topic