Related Clues:

• Scarce
• With 31-Across, ad come-on #2
• Put a cap on
• Sort of edition
• Corporate designation
• Restricted
• Constrained
• See 81 Across and 5 Down
• Capped
• Like some editions
• Train type
• Restricted or finite
• Confined within bounds
• Circumscribed, restricted
• Bounded, circumscribed