An activity represents the view of one party (attribute "origin") on a certain project. If other parties want to add information they create an own view and link it to the corresponding activity view with the element "anotherView"
Known IDs of a project (since a project can have several IDs in different organizations)
Database keys of other views of the same activity or related activities.
shortDesc is a SHORT description suitable for displaying next to the title in a web portal.