Special conversion techniques are employed in order to produce a state-of-the-art vector output, thus avoiding flaws produced by conversion software. Normally, like most CAD/GIS conversion companies, we use automated software to edit and clean the scanned output. But we can also go one step further and trace overlay files to vectorize the hard copy to cover even the minutest detail. The vectorized drawings/maps are manually checked grid by grid to ensure a near perfect duplication.