Related Clues:

• English following fake set of rules
• System of standards
• Area ___ (part of a phone number)
• Word with ''bar'' or ''area''
• Word after ''area'' or ''dress''
• Area ___ (phone number part)
• Telephone area ___
• Zip ___
• Set of diplomatic customs
• Cryptographers break it
• Pearl Jam's 4th "No ___"
• Do some programming
• Etiquette of fish knife's last
• Area ___ (phone number start)
• Navajo ___ talkers of WWII