As a convenience we have added the ability to extract files from a zip file.
This feature is not directly related to astrological calculations or features needed in Sirius, but sometimes you may encounter a situation where you want to extract files in a zip file. In some versions of Windows the ability to do this is provided but in some older versions of Windows you may need to download and install a program to be able to extract files from a zip file. If you encounter this situation, this feature can be very handy. Zip files are commonly used to compress files to be smaller without losing any information n the file.