Does D's GC release memory back to the OS?

[Richard White via Digitalmars-d-learn]

Just wondering if D's GC release memory back to the OS?
The documentation for the GC.minimize 
(http://dlang.org/phobos/core_memory.html#.GC.minimize) seems to 
imply that it does,
but watching my OS's memory usage for various D apps doesn't 
support this.