Some people use the AstroSignature feature on several people and it is convenient to be able to stay in the AstroSignature Forecast window without having to return to the main window to look at the AstroSignature for the next person. This is convenient also because you may be looking at the same AstroSignature forecast for the same time period for several people. In Sirius you can select from any of the current entries while in the AstroSignature forecast.