Hi Alexander -- on Oct 29 2018 at 10:29, you wrote:   
      
   AK> What is a format these books are made? Theoretically, it should be a   
   AK> dot-matrix, raster format.   
      
   I can't speak to that aspect, but there are several widely-accepted formats in   
   use:   
      
   EPUB   
   The ePub format is an open format designed by the Open eBook Forum and   
   developed by the International Digital Publishing Forum. Based on XHTML and   
   XML.   
      
   AZW   
   This is an Amazon format used exclusively on the Amazon Kindle. It is basically   
   a MOBI format that uses a high compression option.   
      
   LIT   
   This is an e-book format developed for the Microsoft Reader software.   
      
   PDF   
   The Portable Document Format was created by Adobe for its Acrobat products.   
      
   ODF   
   OpenDocument Format, XML-based file format, which is the default format for   
   OpenOffice, an open source productivity suite that is becoming a popular   
   alternative to Microsoft Office.   
      
   MOBI   
   The e-book format used by the MobiPocket Reader   
      
      
   Cheers... Dallas   
      
   --- timEd/NT 1.30+   
    * Origin: The BandMaster, Vancouver, CANADA (1:153/7715)