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.
The Holiday Inn Chicago Midway Airport hotel is 0.35 miles from the Midway International Airport (MDW). Some local attractions within 10 miles of the hotel are Chicago McCormick Place, Bedford Park Industrial Center, the Magnificent Mile, Kraft-Nabisco, Brookfield Zoo, and the Shedd Aquarium.