SWI-Prolog -- prolog

Documentation
- Reference manual
  - Built-in Predicates
    - Editor Interface
      - Customizing the editor interface
        
        prolog_edit:locate/3
        
        prolog_edit:locate/2
        
        prolog_edit:edit_source/1
        
        prolog_edit:edit_command/2
        
        prolog_edit:load/0
- Packages

Normally an undefined multifile predicate. This predicate may be defined to provide loading hooks for user extensions to the edit module. For example, XPCE provides the code below to load library(swi_edit), containing definitions to locate classes and methods as well as to bind this package to the PceEmacs built-in editor.

:- multifile prolog_edit:load/0.

prolog_edit:load :-
        ensure_loaded(library(swi_edit)).