We named our main webste -ArchimedesPresseUK.com- after the Sicilian mathematician, Archimedes (287BC-212BC, Syracuse). Archimedes, calculated the ratio between the circumference and the radius of a circle which we denote today as the Greek letter π. The ratio is the fraction 22/7. It's very useful; the circumference can be calculated as 2 π r, the area within the circle is 2 π r squared and the volume of a sphere is 4/3 π r cubed. All of which has nothing to do with our books except that the Greek character π is a little intriguing.
The books you load are similar to miniature websites and do not reside on your device - this saves space for small devices like mobiles, etc. Instead, a cookie - a tiny file - is stored on your device and for each book you have loaded, it records the title, the source from which it came and the last page you were reading from - a bookmark.
This information allows the system to re-load your book and display it without its taking up room on your machine.