Comparison of results of the JKTEBOP analysis of synthetic light curves with the input values, for a sample of crucial parameters (fractional radii and inclination). The plot shows ratio of the output to the input value, with scaled uncertainties calculated with Monte-Carlo approach (Task 8). Each colour codes the analysis of a synthetic curve based on one of the selected systems. The dashed vertical lines mark ±1% deviation from the input. In every case, including those with the largest oblateness, JKTEBOP reproduced the input values with accuracy better than 0.7%.