1. INTRODUCTION  
2. OBSERVATIONS  
3. ANALYSIS  
3.1. The White Dwarf WD 0310-688  
3.2. MEOW Data Analysis  
3.3. Other Constraints on Companions  
4. DISCUSSION  
4.1. Giant Planet  
4.2. Debris Disk  
4.3. Implications of the Discovery  
4.4. How to Distinguish the Two Scenarios  
5. CONCLUSIONS