... simulation libraries is done at the PDE language, graphical interface, and data interface levels. The PELLPACK programming environment allows differen-tial, variational, and template forms for ... format specificationOutput visualization visualization and animation of all possible output data produced bysolution (solutions, error analysis, performance data), including nec-essary data conversion ... PELLPACK problem and solu-tion specification PDE framework specification symbolic PDE operators definition, input functions transformation inFortran, linearization, Jacobian, and default framework...