A method that allows a search engine to find a document and allows a
potential buyer to review portions of the document. The invention provides
a plain text index to the document that may be searched by internet
engines and reviewed by potential buyers of the document. The full text of
the document remains encrypted and managed by a Digital Rights Management
(DRM) package. The index is synchronized and hides contextual information
so that potential buyers may determine whether they want to obtain rights
to review the document.