Related Clues:

• It's labeled 'option' on a Mac
• PC key near the space bar
• Certain keyboard key
• Hgt
• ___-Alt-Del
• PC key on either side of the space bar
• Cockpit datum: Abbr
• Height: Abbr
• Flying fig
• Elev
• Key in many shortcuts, for short
• __ rock: music genre
• Lower-left PC key
• "Ctrl" neighbor
• Aviator's concern: Abbr