How to insert a file into a "Reply"

It is now done exactly the same as inserting an inline image, except that you upload a file (eg CDR) instead of an image. The forum figures out whether to display the file (if its a bitmap) or to create a link to download it (if it is something else).

At least, that's the way I think it works, but there are many things about the new forum that are still to be fully understood -- and as before, there are likely to be restrictions on the file types that can be uploaded. These may also vary according to the forum topic.