MSWLogo is a rare, Logo-based programming environment, originally based on LISP and intended for educational purposes.
The one big plus of Logo, however, is that as it was created for education, it's remarkably easy to learn. It's a great introduction to programming for kids or those that want to get started in programming. It's not all boring either - although graphs and charts are its main application, MSWLogo can be used to create games or programs for Windows.
The MSWLogo interface is about as basic as it gets - in fact it's a bit like using MS Basic itself. There are tons of tutorials and even video guides to get you started with Logo, so you'll be able to build your own square or graph in no time.
MSWLogo is a great way for beginners and kids to get started in programming but it's so limited and rarely used that you'll find it doesn't go very far.