Related Clues:

• Graph-paper pattern
• Power system
• Power network
• Criss-cross framework
• Map aid
• Crossword diagram, e.g.
• Part of a control tower screen
• Crosshatch design
• Crisscross structure
• What you're filling in
• Pie crust pattern
• Sudoku feature
• Sudoku component
• Graph paper pattern
• Graph-paper design