SWI-Prolog -- Manual

Documentation
- Reference manual
- Packages
  - SWI-Prolog HTTP support
    - The HTTP server libraries
      - library(http/html_head): Automatic inclusion of CSS and scripts links
        
        About resource ordering
        
        Debugging dependencies
        
        Predicates

3.23.2 Debugging dependencies

Use ?- debug(html(script)). to see the requested and final set of resources. All declared resources are in html_resource/3. The edit/1 command recognises the names of HTML resources.