If you want to just save some files, add a file stack anywhere in your tree. A file stack is essentially nothing else than a folder for files.

Afterwards, you can simple upload new file versions by drag & drop into the pane or use the +-icon on the botton right to upload a file.

Phonemos will Index Word and PDF files for search upon upload. It will also try to Index OCR-based text recognition in embedded images for search. Files in file stacks are versioned. See Versioning and history for more information.
For each file, it shows three action icons:
view
download
copy a direct link to this file into the clipboard
Download and link are pretty self explanatory. The view action will show a preview of the file.

PDF, images and Microsoft Office files can be displayed directly in a preview mode. Please note that there is a sidebar on the right that will allow you to start a discussion or retrieve previous versions of the file. And through the “…”-menu item in the side bar, you can also delete a file. Note that delete will not actually erase any data, the item will just land in the current topic’s trash.