Another user pointed out
++ HERE ++ that PG Music formerly shipped a "little blue booklet" with each annual release of Band-in-a-Box. The "little blue booklet" detailed new features. The booklet has become a pdf file.
Perhaps the new feature booklet is another candidate that could be available for public download.
Even though PG Music lists new features for both Band-in-a-Box and RealBand online I can understand how many users and potential customers would benefit by having access to a book available for download that can be viewed and studied offline.