optimization_constraint

• type: setup command.
• function: define a constraint for optimization.

&optimization_constraint
    STRING quantity = NULL;
    double lower = 0;
    double upper = 0;
&end

• quantity -- The quantity to be constrained, given as an rpn expression in terms of the optimization variables, the optimization covariables, and and the ``final'' parameters (see the entry for run_setup for the last of these). The optimization (co)variables are referred to as <element-name>.<parameter-name>, in all capital letters.
• lower, upper -- The lower and upper limits allowed for the expression.