\input zb-basic \input zb-ioport \iteman{io-port 70326132} \itemau{Hobatr, Chanika; Malloy, Brian A.} \itemti{The design of an OCL query-based debugger for C++} \itemso{SAC, 658-662 (2001).} \itemcc{} \itemut{} \itemli{doi:10.1145/372202.372796} \end