From the developer: "This program is developed for wind and earthquake resistance design of structure especially for building. Using 2 dimensional frame models, it can perform various static and dynamic analyses including eigenvalue, lateral static load, model analysis by using seismic spectrum and time history response by using earthquake acceleration record. As a useful tool for a structural engineer, with interactive user interface, it provides a convenient operating environment: easy to understand, fast in response, using graphical input and output and checking input data automatically. Using this program, you can handle a complicated structure easily even a skyscraper. The data also can be used for higher version of DynaFrame-2D for nonlinear analysis."