&optimization_
STRING term = NULL;
&end
term -- An rpn expression giving one term to be optimized.
If more than one optimization_term command is given, then the terms are
added. The advantage of using this command over giving an equation via
optimization_setup is that elegant will report the value of
each term as it performs the optimization (if a log_file is given to
optimization_setup). This permits determination of
which terms are causing problems for the optimization.