Interfaces
 InterfaceDescription
 ITask A task performs some task when the start() method is called.
 ITaskGroup A task is a composition of task-items.
Classes
 ClassDescription
 ParallelTask A task group that processes its children in pseudo-parallel.
 SequenceTask A task group that processes its children in sequence.
 Task Base-class for a tasks that perform some processing and can be placed inside task groups.
 TaskEvent An event that occurs while processing a task.
 TaskGroup A base-class for task groups which implements the children and size properties.
 TaskState The states of a task-item.