MVL is a easy to use and compact (34 commands) general purpose language designed to enable inexperienced users to create their own windows and to perform in their windows productive activities and calculations. MVL users can: create customized windows; insert objects such as subwindows, menus, buttons and sliders; read/write data from/to windows and subwindows; define the program response at mouse or menu events; perform calculations with numeric or string constants, variables and arrays. Language, IDE, Manual and ready-to-run Examples are integrated in a single file (mvl.exe, less than 500 Kb) that can be executed from any writable medium (no installation required).