Barclays, Base Prospectus 2006

- 61 -
"Index Level" means the level of the Index as determined by the Determination Agent at the relevant
Valuation Time on each Index Valuation Date by reference to the level of the Index published by the
Index Sponsor.
"Index Linked Redemption Amount" means an amount [, which shall never be less than the
Protection Amount,] determined by the Determination Agent on the Final Index Valuation Date in
accordance with the following formula [specify redemption formula] and which shall always be equal
to or greater than zero and, in the event that such amount will be less than zero, shall be deemed to be
zero [if so specified in the Final Terms].
"Index Sponsor" means [insert name of sponsor] which is the corporation or other entity that is
responsible for setting and reviewing the rules and procedures and the methods of calculation and
adjustments, if any, related to the relevant Index and announces (directly or through an agent) the level
of the relevant Index on a regular basis during each Scheduled Trading Day; where reference to the
Index Sponsor shall include a reference to the "Successor Index Sponsor" defined in §4d(1) below.
"Index Valuation Date(s)" means [insert Valuation Time and Financial Center] on [insert date]
where [insert date] shall be the "Final Index Valuation Date".
§4c
(Redemption. [Extraordinary Events])
(1) The [Notes] [Certificates] shall be redeemed on [insert Maturity Date] (the "Maturity Date")
at [the Index Linked Redemption Amount] [either the Index Linked Redemption Amount or
by delivery of [insert securities to be delivered]] [upon automatic exercise] as determined by
the Determination Agent in accordance with the provisions hereof [and the Final Terms] and
as notified to the [Noteholders] [Certificateholders] in accordance with §12 by the
Determination Agent immediately after being determined.
[[If "Cancellation and Payment" is specified in the Final Terms]
(2) Extraordinary Event. In the event of an Extraordinary Event the Issuer may redeem all, or some
only, of the [Notes] [Certificates] then outstanding at the Early Redemption Amount [or any
other amount specified in the Final Terms] together, if appropriate, with interest accrued to (but
excluding) the date of redemption upon the Issuer having given not less than [5] [specify]
Business Days' notice to the [Noteholders] [Certificateholders] in accordance with §12; and not
less than 7 Business Days before the giving of such notice, notice to the Fiscal Agent [(unless
the Fiscal Agents acts as Determination Agent)].
§4d
(Successor Index. Determination Agent Adjustment. Correction of an Index. Disrupted Days)
(1) Successor Index. If any Index is not calculated and announced by the Index Sponsor but is
calculated and announced by a successor to the Index Sponsor (the "Successor Index Sponsor")
acceptable to the Determination Agent or replaced by a successor index using, in the
determination of the Determination Agent, the same or a substantially similar formula for, and
method of, calculation as used in the calculation, of that Index (the "Successor Index"), then
such Index shall be deemed to be the index so calculated and announced by the Successor Index
Sponsor or that Successor Index, as the case may be.
(2) Determination Agent Adjustment. If, in the determination of the Determination Agent on or
before any Index Valuation Date the Index Sponsor (or if applicable) Successor Index Sponsor
makes a material change in the formula for, or the method of calculating, an Index or in any
other way materially modifies an Index (other than a modification prescribed in that formula or
method to maintain that Index in the event of changes in constituent securities and capitalisation
and other routine events) (an "Index Modification"); or permanently cancels the Index and no
Successor Index exists (an "Index Cancellation") or on any Index Valuation Date the Index
Sponsor fails to calculate and publish the Index Level (an "Index Disruption"), then the
Determination Agent shall calculate the Index Linked Redemption Amount and/or the relevant