[X3D-Public] X3D Schema, DTD corrections: CADAssembly children cannot include CADFace

[Don Brutzman]

22 August 2012, brutzman, hudson
- meta tag includes optional attribute 'scheme' (for consistency with DOCTYPE and HTML 4)

Specification references:
http://www.web3d.org/files/specifications/19775-1/V3.3/Part01/components/core.html#METAStatement

HTML 4.01 says:
http://www.w3.org/TR/html401/struct/global.html#h-7.4.4.2
The META element 

<!ELEMENT META - O EMPTY               -- generic metainformation -->
<!ATTLIST META
  %i18n;                               -- lang, dir, for use with content --
  http-equiv  NAME           #IMPLIED  -- HTTP response header name  --
  name        NAME           #IMPLIED  -- metainformation name --
  content     CDATA          #REQUIRED -- associated information --
  scheme      CDATA          #IMPLIED  -- select form of content --
  >

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

=======================

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