predicate_definition//2

Documentation
- Reference manual
  - Built-in Predicates
    - Printing messages
      - Printing from libraries
        
        Referring to predicates from a message
        
        predicate_reference//1
        
        predicate_reference//2
        
        predicate_definition//2
        
        predicate_kind/2
- Packages

Source

predicate_definition(+Spec, +Message)//

Emit “Message at File:Line” on a new line if the location of Spec is known and nothing at all if it is not.