Related Clues:

• Climber's concern: Abbr
• Key in a PC reboot combo
• Not mainstream, informally
• Start of some rock genre names
• Key below X, on some keyboards
• Prefix in some music genres
• Key close to Ctrl
• __-rock
• Mtn. meas
• Nonmainstream, briefly
• Abbr. in a cockpit
• Key near Ctrl
• Delaware has the lowest mean one in the U.S.: Abbr
• Substitute, briefly
• PC shortcut key