Oh… nevermind.
From Wiki:
In addition to the “original Morgenstern” passages that Goldman says he cut, he also claims in the book to have written a new scene: a loving reunion between Buttercup and Westley after they have been apart for many years. In the novel, the Goldman character says that there was an objection to his adding text that was not written by Morgenstern to the book (Goldman was only allowed to excise text) but any reader who wants to read the Reunion Scene may write to the publisher (formerly Harcourt Brace Jovanovich; now Random House) and receive one for only the cost of a self-addressed stamped envelope. Many readers wrote in to the publisher and did receive a letter,[1] but instead of an extra scene, the letter detailed the (obviously fictitious) legal problems that Goldman and his publishers encountered with the Morgenstern estate and its lawyer, Kermit Shog. This letter was revised and updated periodically; the 1987 revision mentioned the movie, while the 25th Anniversary Edition publishes the letter with an addendum about Kermit’s lawyer granddaughter Carly.
A copy of the letter is here:
http://www.netfunny.com/rhf/jokes/89q4nb/reunion.982.html