Related Clues:

• Clear case, papers filed
• Happening to keep papers on display
• Back father and mother perhaps, as such an heir
• Duke leaves port, beginning to traverse plain
• Apparent poverty traps
• A president has cause to be clear
• Clear 'conscious uncoupling' essentially is rubbish
• Open, not 1 across
• It's crystal clear to father retiring with mother
• Dad retired? Mum, perhaps, follows. That is readily understood
• Unconcealed, open to view
• In Dover the asylum seekers are visible
• Voter (anag.)
• Past time is not hidden
• Father's back before mother, say - that's obvious!