As long as we maintain the same document identification number and file name you can download the latest version and use your existing password without having to purchase another. The Colloidal Silver document, for example, has been revised and expanded several times and is expected to undergo several more significant revisions. You can do key word searches. You can search large documents by keyword and use your time more efficiently. Both PDF and Hyprmaker formats support this feature.
Electronic documents cost less than their printed cousins.
You can also make a printed copy of all or part of the document on your own printer if you wish. There is no delay for mailing and shipping, etc. They have the came copyright restrictions as their printed cousins. That means that you have to purchase a password to open the document. The password is hard drive specific.