expiry of oppies

Someone wrote on an earlier thread that there had been a precedence of companies extending the expiry date of options. He quoted at least two examples.

Does anyone know about the legalities of such a move? If it simply involved the stroke of a pen, why would not a lot more companies, including our beloved AEX, take this option?

Maybe the purchaser of those 13 million odd AEXO a couple of weeks ago knew a lot more than we do. All AEXO holders woul love to see a "JUN10" expiry date instead of a date just a few months away.