expected for absorption in a clumpy wind following EG20. Details on the model generation can be found in the text. Upper panel: Dependence on the line of sight (blue: superior conjunction, red: inferior conjunction) and the β value of the wind velocity law (Eq. (6); solid: β = 2, dashed: β = 0.5), highlighting their strong impact on the continuum. Middle panel: Ratio to a baseline model with , showing the increase in continuum variability and with and the reduced increase of the line variability (dips in the ratio). The lowest ratio model (blue) has been multiplied by a factor of ten for better visibility. Bottom panel: Ionisation dependence. A high is shown to highlight the continuum changes. The increase in with ionisation is weaker for higher ionisations. For clarity, the model is only shown above 5 Å.