This excerpt taken from the LUX 20-F filed Jun 28, 2006.
Right of repayment and cancellation in relation to a single Lender
(i) any sum payable to any Lender by an Obligor is required to be increased under paragraph (c) of Clause 13.2 (Tax gross-up); or
(ii) any Lender claims indemnification from either Borrower under Clause 13.3 (Tax indemnity) or Clause 14.1 (Increased costs); or
(iii) any Lender notifies the Agent of its Additional Cost Rate under paragraph 3 of Schedule 4 (Mandatory Cost formulae),
the Italian Borrower may, whilst (in the case of paragraphs (i) and (ii) above) the circumstance giving rise to the requirement or indemnification continues or (in the case of paragraph (iii) above) the Additional Cost Rate is greater than zero, give the Agent notice of cancellation of the Commitment of that Lender and its intention to procure the repayment of that Lenders participation in the Loans.
(b) On receipt of a notice referred to in paragraph (a) above, the Commitment of that Lender shall immediately be reduced to zero.
(c) On the last day of each Interest Period which ends after the Italian Borrower has given notice under paragraph (a) above (or, if earlier, the date specified by the Italian Borrower in that notice), each Borrower in relation to which a Loan is outstanding shall repay that Lenders participation in that Loan.