Abstract: A new way to “webify” host applications and streamline them for different user groups, without revising the original application on the host, enhances the usability of host applications in a web environment—providing a graphical user interface and streamlining the flow of information for current or new user groups. Host application materials are analyzed as source material, rather than as a literal script. Processing can alter the way host information is presented—both in terms of appearance and sequence—making it possible to present just the information user groups care about, with a new graphical interface that's familiar to today's PC users. Additional components using JavaScript control how information from the host is presented in a web browser, without modifying the original application on the host system.