[en] The D-III experiment has fully explored the potential of the generic dee shaped plasma in β/sub T/ for elongation kappa from 1.0 to 1.6 and triangularity delta from -0.1 to 0.9. The results show a disruptive β/sub T/ limit given by β/sub T/(%) less than or equal to 3.5 I(MA)/a(m) B(T) in good agreement with recent theoretical work on ideal ballooning and/or external kink modes. A hard disruptive limit to the operating current in Ohmic diverted plasmas was found at I/aB = 1.05. Plasma stability improved as the thickness of the closed field line plasma mantle was increased. Clear evidence for the external m=2, n=1 kink as the cause of some disruptions was found. High n, 3 less than or equal to n less than or equal to 5, modes have been observed near the β/sub T/ limit