Possible Clues:

• Make clear and more comprehensible
• Shed light on, clarify
• Make clear
• Explain the hidden clue I make an appointment with
• State of Spanish hero accepting Quixote's second bolted
• Clarify cryptic clue one meets at specific time of year
• Make clear, explain
• Throw light on a problem, make clear (9)
• Explain
• Edit a clue, perhaps, to make it clear