This is an example of Forum. In turn, a Forum can be divided into many conversations (discussion threads). Every time you post a comment, you can attach a file (maximum size allowed 10 Megabytes, although Forum creator can select that value among 10 Kbyte, 100 kbyte, 1 megabyte and 10 megabyte). Project Coordinator and WP co-leaders are the only one allowed to add a new Forum.