This excerpt taken from the LUX 20-F filed Jun 28, 2006.
13.4. Tax Credit
If an Obligor makes a Tax Payment and the relevant Finance Party determines that:
(a) a Tax Credit is attributable either to an increased payment of which that Tax Payment forms part, or to that Tax Payment; and
(b) that Finance Party has obtained, utilised and retained that Tax Credit,
the Finance Party shall pay an amount to the Obligor which that Finance Party determines will leave it (after that payment) in the same after-Tax position as it would have been in had the Tax Payment not been required to be made by the Obligor.