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one more 2.0 erratum

From: Lofton Henderson <lofton@rockynet.com>
Date: Fri, 31 Aug 2007 15:34:38 -0600
Message-Id: <5.1.0.14.2.20070830153908.0318f040@rockynet.com>
To: WebCGM WG <public-webcgm-wg@w3.org>

WebCGM WG,

Current collection of potential 2.0 errata:
http://lists.w3.org/Archives/Public/public-webcgm-wg/2007Aug/0020.html
http://lists.w3.org/Archives/Public/public-webcgm-wg/2007Aug/0021.html

New addition to collection...

Case insensitivity of <param> attribute values
----------
A careful look at section 3.4 of WebCGM 1.0 [1] and section 3.4 of WebCGM 
2.0 [2] indicates that the keyword values of the two attributes of the 
<param> sub-element of <object> are presented without regard to case.  See 
for example the treatment of the value 'middle', which is variously 
presented as 'middle' or 'Middle' in the text and in the figures.

This follows the general treatment of most non-graphical text strings as 
case-insensitive in WebCGM.  See for example the PPF entries for a couple 
of Metafile Descriptor elements [3]:  METAFILE DESCRIPTION, T.16.2, which 
says "Parameter strings are considered case insensitive", or T.16.13 FONT 
LIST, which says "Font names are considered case insensitive."

This erratum was discussed in Seattle.  A spot check of WebCGM viewers 
shows that case-insensitive is commonly assumed.  It is also agreed to be 
an editorial correction (Class 2).

CONCLUSION.  It should be explicitly clarified in [2] that attribute values 
of the <param> sub-element are case-insensitive, with the single exception 
of the value associated with the 'onload' <param> (which is the name of a 
script function to be invoked.)

[This erratum applies to WebCGM 1.0 as well, with the exception of the 
'onload' proviso.]

[1] http://www.w3.org/TR/2001/REC-WebCGM-20011217/REC-03-CGM-IC.html#webcgm_3_4
[2] http://www.w3.org/TR/2007/REC-webcgm20-20070130/WebCGM20-IC.html#webcgm_3_4
[3] 
http://www.w3.org/TR/2007/REC-webcgm20-20070130/WebCGM20-Profile.html#webcgm_4_5

Regards,
-Lofton.
Received on Friday, 31 August 2007 21:34:15 GMT

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