Delete the document from the web application (word/excel...)
There is no way to delete the current document from word/excel web.
In order to delete the document, I need to go to the onedrive web page, to the folder where the document is, and then delete the document.
It is more noticeable when creating a new document but I can't not save it, it is automatically already saved.
If I don't want to keep it, I must give it a unique name (rename it) in order to be able to identify the specific new document (because of course I already have a document named "document" - the default new), and delete it from onedrive web.
This should be fixed by adding a "delete this file" button somewhere in the File menu.