1. Introduction  
2. The SIX Survey  
2.1. Analysis of BAT data  
2.2. Analysis of IBIS data  
2.3. Combining the IBIS/ISGRI and BAT mosaic images  
3. The SIX Survey: Results  
3.1. Performance  
3.2. The SIX Catalog  
3.3. Statistical Properties  
4. Discussions  
4.1. The SIX: The Survey of a Virtual New X-ray Mission  
4.2. Results from the Sample  
5. Conclusions