What an excellent bit of example code. Truly outstanding: it does very much what I need it to do, with the things that I want to do looking like they are within reasonably easy grasp.
Upload the code to the chip, and straight away there is a file browser, with the facility to upload files and a text editor: an easily set up website on a chip.
What more could we reasonably expect?
I can think of almost nothing: it would be handy to have the facility to easily download everything all in one, and perhaps that feature is there, but I just have not found it yet.
It is probably desirable to have a password to protect the file manager, but that is perhaps not ideal in example code, and should be easy enough to add.
What I want to do next is to set it up as an access point, and put it down the allotment, to serve as an information exchange point. Possibly I will need to set up a few, on a mesh, in order to cover the whole site, but we can cross that bridge when we come to it.