Microsoft Visual Programming Language, or VPL, is a visual programming and dataflow programming language developed by Microsoft for the Microsoft Robotics Studio. VPL is based on the event-driven and data-driven approach. The programming language is distinguished from other Microsoft programming languages such as Visual Basic and C#, as it is the only Microsoft language that is a true visual programming language. Microsoft has utilized the term "Visual" in its previous programming products to reflect that a large degree of development in these languages can be performed by "dragging and dropping" in a traditional wysiwyg fashion.