By default, user diagrams are networks (of symbols), but if this keyword is included in a diagram type’s description, the diagram type is treated as a hierarchical diagram. This means that all node symbols assigned to it will have the capability of being arranged in a hierarchy and other related hierarchical functionality (such as hierarchical numbering) is supported.
The HIERARCHICAL keyword can only be used with user-defined diagram types – it cannot be applied to existing diagram types. In any other context it is ignored after a warning to the user. (For information on how to create a new user-defined diagram type, see RENAME DIAGRAM keyword.)
Example
RENAME DIAGRAM "User 1" to "Zoo"
RENAME SYMBOL "User 1" to "Mammals"
RENAME SYMBOL "User 2" to "Reptiles"
RENAME DEFINITION "User 1" to "Mammal"
RENAME DEFINITION "User 2" to "Reptile"
SYMBOL "Mammals"
{ DEFINED by "Mammal"
ASSIGN TO "Zoo" }
SYMBOL "Reptiles"
{ DEFINED by "Reptile"
ASSIGN TO "Zoo" }
DIAGRAM "Zoo"{HIERARCHICAL
PROPERTY "Hierarchical Numbering"
{ EDIT Boolean LENGTH 1 DEFAULT "T" }
PROPERTY "First Node Number"
{ EDIT Text Length 20 DEFAULT "1" }
}
The diagram created by the USRPROPS.TXT above will be hierarchical in nature – it will be similar to an Organizational Chart, and so on.