D interface header import file

[ric maicle via Digitalmars-d-learn]

I just noticed these multiple terminologies:

   * from the compiler --help, -H refers to a 'header' file
   * the compiler online page refers to it as 'D interface' file
   * The generated .di file first line comment says 'D import file'

I know they refer to the same thing but how is this kind of thing
addressed?