From OpenSCADAWiki
Addressing of the pages begins with the second element of the URI. It is connected with the fact that the first element of the URI is used to identify the user WWW-interface module. For example, URL http://localhost.localdomain:10002/WebUser/UserPage can be deciphered as a call of the user page "UserPage" of this module on the host "localhost.localdomain" on port 10002. In the case of absence of the second element of URI and instruction to display an index of the user pages in the configuration, the index of the pages is generated (Fig.1).