[x3d-public] External prototypes

[Kristian Sons]

Hi,

when declaring external prototypes, the author needs to declare the 
subset of the interface she intends to use by replicating those fields 
from the prototype declaration (cf X3D spec 4.4.5.2)

What is the rationale behind this? Seem to make the implementation a 
little bit simpler, but since events that occure before the prototype 
has been resolved are ignored anyway, this is really just a little bit.
However it complicates the use of external prototypes because it's a 
popular source of error (at least for my first steps with prototypes at 
times when maybe the error messages in then popular X3D browsers where 
improvable).

But maybe I miss something.

Best,
   Kristian

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Kristian Sons
Deutsches Forschungszentrum für Künstliche Intelligenz GmbH, DFKI
Agenten und Simulierte Realität
Campus, Geb. D 3 2, Raum 0.77
66123 Saarbrücken, Germany

Phone: +49 681 85775-3833
Phone: +49 681 302-3833
Fax:   +49 681 85775–2235
kristian.sons at dfki.de
http://www.xml3d.org

Geschäftsführung: Prof. Dr. Dr. h.c. mult. Wolfgang Wahlster (Vorsitzender)
Dr. Walter Olthoff

Vorsitzender des Aufsichtsrats: Prof. Dr. h.c. Hans A. Aukes
Amtsgericht Kaiserslautern, HRB 2313
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