[X3D-Public] X3D Schema, DTD corrections: meta tag name attribute is optional to match HTML

[Don Brutzman]

25 August 2012, brutzman
- meta tag name attribute is optional to match HTML, since http-equiv attribute might be used instead

New rules were also added to X3D Schematron to warn if these attributes
(name and http-equiv) are either both missing or both present.
http://www.web3d.org/x3d/tools/schematron/X3dSchematron.html

This validation case can be tested using the X3D Validator service.
https://savage.nps.edu/X3dValidator

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Also updated X3D Schema and DTD documentation.  Relevant links:

http://www.web3d.org/specifications/contents.html
http://www.web3d.org/specifications/X3dDoctypeDocumentation3.3.html
http://www.web3d.org/specifications/X3dSchemaDocumentation3.3/x3d-3.3.html
http://www.web3d.org/specifications/x3d-dtd-changelog.txt
http://www.web3d.org/specifications/x3d-schema-changelog.txt

These and related links are maintained on the X3D Resources page:
http://www.web3d.org/x3d/content/examples/X3dResources.html#AuthoringSupport
http://www.web3d.org/x3d/content/examples/X3dResources.html#Tooltips

Review, comments, questions and improvements are welcome.

all the best, Don
-- 
Don Brutzman  Naval Postgraduate School, Code USW/Br       brutzman at nps.edu
Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman\