Manual

1-14 Introduction
The following are the major characteristics of this notation as it is used in this
document:
A. Each state is represented by a rectangle with rounded corners.
B. A collection of sub-states may be grouped into a super-state.
C. The entity described by the diagrams will be in one and only one of the sub-
states at all times.
D. Variables representing the current state of an entity do not contain values
for super-states, only the lowest sub-state is represented.
E. State transitions are represented by single-headed arrows.
F. Each state transition is a Collection Event, and it has a unique Collection
Event ID (CEID)
G. An arrow directly from a super-state to another state describes a Collection
Event that can occur while the entity is in any one of the sub-states
contained in the super-state.
H. An arrow directly into a super-state to the H* (history) symbol describes a
transition to the lowest sub-state which described the entity just before the
transition out of the super-state.
I. An arrow directly into a super-state to the C (conditional) symbol describes
a transition to a particular sub-state based on some other relevant data. The
conditional data is not represented in the diagram but is described in the
associated text.