How saturated are absorption lines in the broad absorption line quasar PG 1411+442?

Recently, convincing evidence was found for extremely large X-ray absorptio n by column densities greater than 10(23) cm(-2) in broad absorption line q uasars. One consequence of this is that any soft X-ray emission from these QSOs would be the scattered light or leaked light from partially covering a bsorbing material. A detection of the unabsorbed soft X-ray and absorbed ha rd X-ray component will allow us to determine the total column density as w ell as the effective covering factor of the absorbing material, which are d ifficult to obtain from the UV absorption lines. Brinkmann et al, recently showed that both the unabsorbed and absorbed components are detected in the nearby very bright broad absorption line quasar PG 1411+442. In this Lette r, we make a further analysis of the broadband X-ray spectrum and the UV sp ectrum from the Hubble Space Telescope and demonstrate that broad absorptio n lines are completely saturated at the bottom of absorption troughs.