VectorPro is a powerful test development tool for generating cyclized ATE test vectors in either WGL or STIL formats. This versatile, and easy to use tool reads in both VCD and EVCD formatted design simulations, and using the feature rich GUI, users are able to view and modify the simulation to fit the needs of their test environment. VectorPro supports multiple timesets, event conditioning, histograms of signal edges, automated timing generation and batch mode operation. In addition, the waveform viewer allows users to easily navigate across simulations to find areas of interest.