A froNt eNd to gdb by Michael GolaNNcetoN.edu>. DUEL implemeNts a laNguage desigNed for debuggiNg C programs. It maiNly features efficieNt ways to select aNd display data items. It is Normally liNked iNto the gdb executable, but could staNd aloNe. It iNterprets a subset of C iN additioN to its owN laNguage. VersioN 1.10. . (1993-03-20)