puzzled how to load existing html pages

I'm on OS/2 system. Its called eCS or in full eComStation today. We have native programs to do the html stuff, but they stopped somewhere at version 3 html spec. Now you can write your own package, but that will take some time. So you're going to look around if there is something universal and I found this program. I have to say its impressive. Tried to load the program, did a few things and than I missed something. As everyone, your just get involved at some point. I do have a few hundred html pages but how do I load them into this program? There seems to be no file manager and I don't think its wise to have some javascript code online in your pages. After all I like to be the only one who's editing my pages. Did I missed something in the manual or so?