I’m not a web designer but a Molecular Biologist. Years ago when iWeb disappeared I made a few simple websites for my mother’s B&B and relief project and our lab (nothing fancy required, kept it clean and simple) with RW 4, but then discovered that HTML files make for very good cross-platform help files that you can incorporate into your app. I even used it to make a local help system for my 86 year old father as he was beginning to always ask the same questions (“How do I do that again …?”).
People here seem to assume that everyone else here is a web designer (which is kind of weird because RapidWeaver started out as “Making webpage creation simple for the rest of us - away from DreamWeaver’s complexity and price”), and that their
users clients have fast flat-rate internet access.
That’s nice if it is the case but the real world is more complex - you might have intermittent and/or slow internet, a computer might not be allowed onto the network (eg some of our work computers that control specialist microscopes are not allowed on the network but need to run our own specialised software, including the help files), app users (on computers that are connected to the internet) stay on older versions of the software and need the help files for that particular version, internet traffic might have to be paid for so you better reduce it to what is essential (not everyone has flat rate internet), etc.
In short: local html files are essential.
I also know several cases of long-term “customers” (customers in the sense that I make their websites for free - my mother is one of them) that use a free web address and webspace provided by their ISP as part of their original contract. Those original sites have no php, no control panels to change settings, only (s?)ftp access to upload the website and manage it - but they would have to pay for the move and a yearly fee for their internet presence as a web address and space are no longer included by their ISP (but as long as they don’t agree to change the original contract they still have it).