Synthetic Stokes I (black line), Stokes V (red line), and linear polarization (blue line) profile at a spectral resolution of 150 000 for a wavelength region around 6302 Å chosen to fit on a 2048 pixel wide detector if critically sampled in the wavelength domain. All spectra are normalized to the mean quiet-Sun intensity, I_QS. The horizontal lines in the lower two panels mark polarization levels of 10, 20, 30% for Stokes V and 1, 2, 3, 4, 5% for the linear polarization. Spectral lines providing |V| > 20% are labeled with the element forming the line.