Related Clues:

• Aftermarket purchase
• Something attached to a larger thing
• Extension; computer peripheral
• Supplemental item
• Software supplement
• Something more
• Attachment of a sheet enclosing pound note
• Second story, perhaps
• Unit of browser customization
• Bonus item
• Item that doesn't come standard
• This adjunct shows program finish time
• Program needing time to include objective for attachment
• Something costing extra
• Sabotaged agenda about Oxford course — not an essential item