State Concept Structure Diagram
A state concept structure diagram assembles all information relating to the state concept diagram described. This diagram is initialized from concept diagram elements.
For example,
The diagram includes:
• variations between components
For example, "Subscriptions" can be classified by "Subscription Type". A "Subscription Type" being characterized by a "Loan Type".

A variation describes how a concept can be varied under another form. The variant is an object similar to the varied object, but with properties or relationships that may differ.
• Substitutions between components

A substitution determines which element can be used to replace another, or is effectively replaced by an element existing in a given context (for example in the context of a variation). Unlike a variation, a substitution does not involve inheritance but a functional equivalence.
• Concept Information Items,

A sub-property is used to specify the relationship between a concept and a concept property.
• Concept components describing the relationship between two Concepts
For example, a "Subscription Type" is characterized by an "Available Loan Type".

A concept component enables representation of a dependency relationship between two concepts. This relationship is directional.
• start events, intermediate events and end events enabling definition of events contributing to change of state of a concept,
For example, the change of state of a member can be caused by a birthday.

An event concept represents an event occurring during concept life, for example a change of season. An event concept marks the impact on a concept of a phenomenon internal or external to the concept. Concept events can be distinguished as concept start events, end events and intermediate events.