This registry entry sets the In option in the Construct Sphere dialog box if it is set to 0 (Zero - False). It sets the Out option if it is set to 1 (True).
Entry Name: Constructed Sphere - InOut
Entry Type: Whole number - either 0 (Zero - False) to select the In option in the Construct Sphere dialog box, or the default value 1 (True) to select the Out option.