The sentences should be complex, with the use of subordinate clauses and writing adapted to "suit audience and purpose".

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The use of the clauses throws a wrench in the process of determining the size of the payout owed to CDS holders.

WSJ: Greek Deal Highlights Flaws in Default Swaps

Since the Argentine default, the use of collective actions clauses (CACs) to enforce restructurings has become the norm.

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The ECJ held that clauses banning the use of foreign decoders and smart cards were void and amounted to a restriction on competition.

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The new legislation also outlaws the use of "most favoured customer" clauses used by tour operators to restrict travel agents offering bigger discounts on other tour operators' holidays.

BBC: News | Your Money | End of the road for insurance bonanza