Many thanks for the replies. Ineptitude on my part it would seem.
I have never used discord but have vague recollections of it being mentioned in the past and so I will post my next, almost inevitable, query on there,
Complete newbie here who may well have missed something obvious.
I am using chrome on linux and seem to be unable to load any of the examples into the online viewer. The prompt in the viewer is "load a jscad project". Clicking on it shows a gnome select a folder popup which only displays folders and cannot be changed to show files (same behaviour with firefox). Clicking on one or two of the folders in the examples directory produces:
Uncaught Error: Cannot find relative path to module /amf
Is this the expected behaviour? I was expecting to be able to click on an example file and see the result.