Larry writes:

It installs just like the original disk, giving you full access to its
important data and a fantastic engine to search it with....

Right, a bloated poorly-written application you have to study carefully to
search what would be much easier with a PDF file with index and Acrobat.

_Machinery's Handbook_ used to be like that, and happily they have now gone
to PDF.

I don't like that Adobe owns the document format and reader, but any
standard is better than the awkward stuff unique to each book.