What is meant by the Compare / Combine selection in the Results Area?

PV Designer allows up to four designs to be created. These designs can be compared side by side, for example when evaluating different hardware or different module placement. In Compare mode, graphical and tabular data is shown separately for each design. When the output from multiple designs will be combined, then the Combine mode can be used to display the sum of the outputs and the graphical and tabular results are combined.