This is a beta version - please give us feedback

We're working on MARKER to make it robust and to add functionality. We hope you'll find it's an easy way of making a map of your own data. If you're browsing the HapMap data then you may spot a few bugs. We think we know most of them but there may be some we don't know. And as we add functionality more bugs are bound to pop up. If you spot a bug or if there's a feature you hate - or even if there's something you like - please give us feedback via the comments page. It will help if you tell us a bit about yourself and why you are using this application.