A Visyond cell is metadata oriented: it can contain attachments and entire conversations.
Open the Cell Info panel
Select a cell, right click (or hover on the sandwich menu), and click on Cell Info to open panel,
Attach files to a cell
You can attach files in the Cell Info Panel and see a report of all the cells containing attachment in the Report / Overview TAB.
Chat with your colleagues inside the cell
Collaborators can leave comments in the Cell Info Panel and you can see a report of all the cells containing comments (so you can print the comments thread as a cover note to the model) in the Report / Overview TAB.