The document list(if available), will provide the list of all the documents that are available for the file you are visualizing:

https://wipocase.wipo.int/applications/WO2014%2F081912?type=publication

The list will provide:

By clicking in any of the links under "document name", the view will be updated, and if the document is available, it will be shown to the (right) side:


If you check the box (at your left), the system will show you a couple of options:

Download: will launch the download of the PDF version of the document that you have markedĀ 

Add to bucket: will add the document(s) you marked to your bucket(for comparing, etc.)