[Ti/H] and [Ca/H] vs. log N(H i) of absorption line systems in the Milky Way and the Small & Large Magellanic Clouds (SMC and LMC, respectively). In case of [Ti/H] the solid line represents the linear fit of the sample A systems, which in this case are class 1 systems, too. In case of [Ca/H] the solid line represents the linear fit of all the QALS for which Ca ii as well as H i column densities are available.