Related Clues:

• Turin-to-Milan dir.
• Florencia-to-Bogota dir.
• Navigational dir.
• Dir. opposite SSW
• San Antonio-to-Austin dir.
• Denver-Chicago dir.
• Pilot's dir.
• Nantes-to-Paris dir.
• Elmira-to-Syracuse dir.
• WSW opposite
• Fuel suffix
• Melbourne-to-Brisbane dir.
• Helm heading, perhaps
• Houston-to-St. Louis dir.
• Pomona-to-San Bernardino dir.