Tasks representation in Diane+
Tasks are represented by boxes that contain task's name.
The shape of the box represents the actor of the task, i.e., whether
it is the end user, the system, or a combination of both.
When appropriate, the number of times the task can be executed is added.
Each task has attributes to
describe how a task has to be performed. If necessary, comments
can be added to describe special features of tasks.