This paper introduces and demonstrates a new post-processing capability that is available in Version 4.0 of VisualDOC. VisualDOC is a general-purpose optimization tool, available from Vanderplaats Research and Development, Inc. This new post-processing tool allows the user to perform real-time What-If? studies in the vicinity of the optimum point found by the optimizer. The tool is demonstrated using a stiffened panel that requires a non-linear analysis.