These excerpts taken from the BP 6-K filed May 22, 2008.
Interpretation and construction
3 In these Articles:
the expressions debenture and debenture holder shall respectively include debenture stock and debenture stockholder;
the expression Secretary shall include any person appointed by the Directors to perform any of the duties of the Secretary and where two or more persons are appointed to act as Joint Secretaries shall include any one of these persons;
all the provisions of these Articles which are applicable to paid-up shares shall apply to stock, and the words share and shareholder shall be construed accordingly;
the expressions written and in writing shall include any way of representing or copying words legibly, but shall not (save where the context requires otherwise) include electronic communications;
words denoting persons shall include bodies corporate and unincorporate;
words denoting the masculine shall include the feminine and vice versa;
words denoting the singular shall include the plural and vice versa;
headings are included only for convenience and shall not affect the meaning of these Articles;
references to any statute or statutory provision shall be construed as relating to any modification or re-enactment of it in force for the time being, and the same principle of construction shall be applied to a statutory instrument or a provision in a statutory instrument;
any words or expressions defined in the Statutes shall bear the same meanings in these Articles, unless that meaning is inconsistent with the subject or context, or unless these Articles attribute another meaning to the particular words or expressions;
any powers of delegation shall not be restrictively construed, but the widest interpretation shall be given to them, and, except where expressly provided by the terms of the delegation in question, delegation of a power shall not exclude the concurrent exercise of that power by any other body or person who is for the time being authorised to exercise it under these Articles or under another delegation of the power.