The entity dictionary defines the entities available to actors during their operations, monitoring and evaluation, and change activities.

The constraints and the rigidity of constraints depends on the order (natural, social, technical) in which the entity is included.

Constraint rigidity is an important factor when exploring the change options available to actors improving their livelihood.

Available technologies is another factor that determines the change options. Knowledge about appropriate technologies, including principles for choosing the best technology for a given situation, is increasingly becoming available from Appropedia, the "appropriate technology wiki."

Maintenance: See global-agreement
Use at Ens wiki