Tuning Overview
Tuning a variable is useful when you want to manually modify its value and immediately perform an analysis of the design. For example, it is useful after performing an optimization analysis that has determined an optimal variable value, and you then want to fine tune the value to see how the design results (for example, traces in a report) are affected.
A design can be updated after a tuning analysis to reflect a design variation solved during a tuning analysis and the results, including field solutions if you select Save Fields and Mesh on the Options tab of the setup.