What are the names of the manuels of Doesburg organ?

There were only Man I, Man II, Man III, Man IV.
Don't they have their special names? Like Great, Swell, Choir...

Man I is Great, there's no doulbt, and Man IV the Echo. Then what about Man II and Man III? Which is Swell or choir or solo......

There were only Man I, Man II, Man III, Man IV.
Don't they have their special names? Like Great, Swell, Choir...

The builders seemingly did not baptized this organ´s divisionals with german usual names (Hauptwerk, Oberwerk, etc.).
You may take a look at this original source:
http://blog.walckerorgel.de/2009/11/14/ ... -doesburg/

Lowest manual is Great or Hoofdwerk, next is Positive or Positief, then Swell or Schwellwerk, the top manual is Echo or Echowerk.
Glen