The Dose Calc. Options menu selects which factors are applied to the dose calculation. YOU SHOULD VERIFY THE SETTINGS IN THIS MENU or in the Rx Window toolbar PRIOR TO PERFORMING A DOSE CALCULATION !!! The affected factors are anisotropy, linear vs point source, a correction for plaques with silicone carriers, a scatter correction, lip collimation, slot collimation, and dose constants.
This menu also provides access to the physics data files loaded by PS when it is launched for review and validation of changes to those files.
From the Dosimetry menu: