contradiction in gdnc docs

[Eric Heintzmann]

                Hi,

The gdnc manpage says :
        "Every user needs to have his own instance of gdnc running.
        While  gdnc will be started automatically by applications,
        it is recommend to start gdnc in a personal  login  script
        like  .bashrc  or  .cshrc.   This avoids error messages as
        well as additional waiting times on application  launches.
        Alternatively you could launch gdnc when X11 is started or
        - if you are running Window Maker - put it Window  Maker's
        autostart script."

But the GNUstep Build Guide for Unix Systems, Chapter 6, GNUstep 
services says :
        "GNUstep knows two kinds of services: the ones that are started
        at boot time and the once that are used per user session. The
        boot services are gdomap and gdnc, and the once used per user
        are gpbs and gsnd."

It seems there is a contradiction. Should I start gdnc at boot time - 
implies one gdnc for all users - or at user login - implies one gdnc per 
user - ?

                Eric