SWI-Prolog -- close_dde

Documentation
- Reference manual
  - Built-in Predicates
    - Windows DDE interface
      - DDE client interface
        
        open_dde_conversation/3
        
        close_dde_conversation/1
        
        dde_request/3
        
        dde_execute/2
        
        dde_poke/4
- Packages

close_dde_conversation(+Handle)

Close the conversation associated with Handle. All opened conversations should be closed when they're no longer needed, although the system will close any that remain open on process termination.