13.11.1.5 Examining the Class Hierarchy

This function provides a rudimentary display of the inheritance relationships between a class and all its subclasses. Indentation indicates a subclass. Because of multiple inheritance, some classes may appear more than once. Asterisks mark classes which are direct subclasses of more than one class. With no arguments, this function starts with the root class OBJECT. This function has no return value.

Syntax

(browse-classes [<class-name>])

Example

CLIPS> (defclass a (is-a USER))
CLIPS> (defclass b (is-a USER))
CLIPS> (defclass c (is-a a b))
CLIPS> (defclass d (is-a USER))
CLIPS> (defclass e (is-a c d))
CLIPS> (defclass f (is-a e))
CLIPS> (browse-classes)
OBJECT
  PRIMITIVE
    NUMBER
      INTEGER
      FLOAT
    LEXEME
      SYMBOL
      STRING
    MULTIFIELD
    ADDRESS
      EXTERNAL-ADDRESS
      FACT-ADDRESS
      INSTANCE-ADDRESS *
    INSTANCE
      INSTANCE-ADDRESS *
      INSTANCE-NAME
  USER
    INITIAL-OBJECT
    a
      c *
        e *
          f
    b
      c *
        e *
          f
    d
      e *
        f
CLIPS>