Storing user preferences in a POD


I am writing a trading application and am looking at having it work for solid users. I am wondering what the best approach would be for storing a user’s preferences in their Solid POD. So say all preferences fall into one of two categories - Market and Trading. And then within these categories we can have specific preferences or further sub-categories and so on. So the preferences could be outlined in a tree something like the following:

Could someone recommend me the best way to save/restore such a tree in a user’s solid POD?



maybe you should upload a pic of your algorythm


Why did you ask me to do that if you weren’t going to help me with it?