[tao]

I have a Sony PRS-505. I made some books from text file from Gutenberg Project using Calibre software. I noticed on the right side of certain pages, there are a small font number. I suppose it is page number of the book.

Obviously, this page number is not the screen page number, it seems to be something more like paper page number, since changing the screen font will not change this number. However, the books I purchased form Sony Reader store did not have the page number on the right side, and the total page numbers changes with the font size.

The question is: how this page number is determined? With a certain paper book size as a reference? Does this page number has any real work paper book page number relevance? Is this page number a Calibre feature or has something to do with Sony PRS-505?

Thank you.

Tao