The unregistered version of the product available for free download and distribution operates only in a local computer. If you wish to use the ViewStatePage class in real projects, it is necessary that you register the library.   The following two versions of the registered product are available:   1. No source texts (Standard). Registration costs €39. You can pay for it here. 2. Source texts included (Source). Registration costs €79. You can pay for it here.   If you cannot pay for the product using the above-mentioned way, feel free to contact us Support@SoftAIN.com and we will discuss alternative forms of payment.   After you have registered, you get a user name and an access password to this website via e-mail. As soon as the users of the standard version have successfully entered under their names, they have an opportunity to download a license key, whereas the users of the version with sources may download the latest version of a library code.   Once you register the library, you can download its later versions from the web site at any time.