Hi, I'm fairly new. I used LV for a little bit of measuring but my next task is to do data handling and storing of huge datasets. So my idea is to use a double linked list to store and search in the datasets ( >1000 entries). Thanks for the example, I found this implementation too but it is also confusing me. http://decibel.ni.co.../docs/DOC-12668 why is in this example the linked list build of two classes?