If you are planning to buy or sell a house, you should be familiar with the new Residential Purchase Agreement. "Oh, my Realtor will tell me what I need to know," you say. Think again! This contract underwent some major changes within the last couple of years, and continues to have little tweaks done to it with no real fanfare at least twice a year. Most of these changes are designed to clarify items that didn't even exist a few years ago, like leased solar and alarm systems. But some items that don't look like a big change can be if they apply to you. Also, There are some subtle bombs hidden in straight-forward boiler plate sentences.