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Subject: RE: [cgmo-webcgm] ISSUE: allow empty layers in 2.0?


I agree.
-----Original Message-----
From: Lofton Henderson [mailto:lofton@rockynet.com]
Sent: Friday, June 10, 2005 2:00 AM
To: cgmo-webcgm@lists.oasis-open.org
Subject: [cgmo-webcgm] ISSUE: allow empty layers in 2.0?

From Dieter's comments:
http://lists.oasis-open.org/archives/cgmo-webcgm/200506/msg00021.html

ISSUE:  allow empty layers in 2.0?

3.2.1.2
The content of a layer should allow for empty layers. BTW: the list shown for grobjects doesnt mention empty grobjects either.
[...]
3.3
Change
<!ELEMENT layer (grobject | para | grnode | gdata)+        >
to
<!ELEMENT layer (grobject | para | grnode | gdata)*        >
to allow for empty layers

The DTD was normative in 1.0.  It clearly did NOT allow for empty layers.  Given that we allow empty grobjects, it seems harmless to allow empty layers.  Any valid 1.0 file would still be valid 2.0.  So we should put the question to the TC.  Therefore:

RECOMMENDATION:  change 2.0 to allow empty layers.

Regards,
-Lofton.



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