A zero with a positive or negative sign in EBCDIC is x'C0' and x'D0' which is also the representation for special characters { and }. Using the modified-zoned-decimal these translate to the ASCII values for { and } which is x'7B' and x'7D' and the rightmost nibble is no longer the binary value of the digit.
Chicago Midway International Airport (IATA: MDW, ICAO: KMDW, FAA LID: MDW) is an international airport on the southwest side of Chicago, Illinois, eight miles (13 km) from the Loop. Dominated by low-cost carrier Southwest Airlines, Midway is the Dallas-based carrier's largest focus city, as of 2013.
When taking public transportation to the Hilton Chicago from O'Hare International Airport: Take CTA Blue Line train to the Jackson stop. This is the only subway train leaving O'Hare. Walk 0.6 miles southeast to 720 S. Michigan Ave. When taking public transportation from Midway Airport to the Hilton Chicago take the CTA Orange Line train to the Roosevelt stop. Walk 0.5 miles north to 720 S. Michigan. Directions to the Hotel.