Maximum number of optimization iterations for the next execution [OPEXE]. Defaults to previously specified value, if any, otherwise defaults to 10.

Limit (in percent) that is applied to the size of each line search step. For example, setting SIZE = 10 will limit design variable changes to 10 percent of the maximum range of design space (defined by feasible design variable limits specified on OPVAR commands) at each iteration. Defaults to previously specified value, if any; otherwise, defaults to 100 (percent).

The forward difference (in percent) applied to the design variable range that is used to compute the gradient. For example, the shift in a DV is DELTA*(MAX - MIN)/100, where MIN and MAX are specified on the OPVAR command. Defaults to previously specified value, if any; otherwise, defaults to 0.2 (percent).