Visualizing the digital counting of patterns (and thus genes) in cDNA libraries. After a pattern for a given gene is determined (eg. via SCA, described in the method section), every lane from the mixed analysis to be examined receives a count that contains all 3 fragments of a fingerprint at the same time (actually all 6 from 2 lanes of the 2 corresponding gels). The width of the search windows indicate that the search algorithm tolerates small deviations in fragment lengths. Due to the higher variations in the analysis of long fragments, the width of the search window is adjusted accordingly.