API Documentation

[kdevel via Digitalmars-d-learn]

Online but not on a local installation I frequently land on pages 
under https://dlang.org/library/ (API Documentation). What is the 
reason for this duplicate docs? The API documentation looks much 
cleaner and better structured.

https://dlang.org/library/std/range.html
vs.
https://dlang.org/phobos/std_range.html