Related Clues:

• Avg., sizewise
• Gas station abbr.
• Official rule, in slang
• Regulation, for short
• Normal: Abbr.
• Bylaw, briefly
• -- U.S. Pat. Off
• ''Andy Capp'' cartoonist Smythe, to friends
• Not long or short: Abbr.
• ___ U.S. Pat. Off.
• Std.
• __ US Pat. Off.
• Cash holder: Abbr.
• Pump abbr.
• Gasoline choice: Abbr.