At this point, take a step back and have a look at what is generated when a Web Page is compiled.
If the Web Page compiled successfully three files would be generated into your partition web directory …\X_WIN95\X_LANSA\x_<partition>\web\vl :
The HTML file is what is kicked off in the browser when you executed the Web Page so open the HTML file in a text editor and have a look inside.
Don't panic at this point, you don't need to know anything about HTML to use web with Visual LANSA. This is just a one off look inside to get a basic understanding of how it works.
A new version of the runtime will be supplied with major releases of LANSA. To take advantage of the latest runtime features you will need to recompile your Web Pages to regenerate the HTML so that it loads the latest runtime.
If you do not want to change your Web Application that is fine, as long as the corresponding version of the LANSA runtime is available to be loaded when executing your Web Page. That is, when you deploy your Web Application you will need to ensure all required runtime versions are installed.
Don't worry about the cache manifest file (mywebpage.appcache) at this point in time, other than to note this is a text file that lists the resources the browser should cache for offline access. You'll come back to this concept in Offline Accessibility.