Related Clues:

• Calculator figs.
• Sudoku fill: abbr.
• Uh-uh and nay
• Crossword diag. markers
• Directory data: Abbr.
• They start many park signs
• Crunched things: Abbr.
• RBI and ERA
• 'No' voters
• Statistics: Abbr.
• Thumbs-downs
• P.O. boxes, e.g.
• Column of boxes on a questionnaire
• Multiple refusals
• Negative responses