This excerpt taken from the SYT 20-F filed Mar 1, 2006.
Hedges of Net Investments in Foreign Operations
The Group designates forward contracts and net purchased currency options as hedges of net investments in foreign operations. Gains and losses are held in the cash flow hedge reserve and will be recycled to the income statement on disposal of the underlying investments. Effectiveness for the forward contracts is measured quarterly using the forward rate basis. Hedge effectiveness for net purchased options is measured on a quarterly basis. The option hedge designation and
effectiveness test excludes the time value element and uses the forward rate methodology. Each quarter the cumulative movement in intrinsic value is compared to the movement in the notional underlying value.