- From: Richard Ishida <ishida@w3.org>
- Date: Thu, 9 Sep 2004 17:13:09 +0100
- To: <wendy@w3.org>, "'wai-gl'" <w3c-wai-gl@w3.org>
- Cc: "'Martin Duerst'" <duerst@w3.org>
Hi Wendy, > -----Original Message----- > From: w3c-wai-gl-request@w3.org > [mailto:w3c-wai-gl-request@w3.org] On Behalf Of Wendy Chisholm > Sent: 09 September 2004 00:58 > To: wai-gl > Cc: Richard Ishida; Martin Duerst > Subject: [Issue 673] Proposed definitions for text, Unicode, > non-text content (without typos) > > > Proposed definitions to address issue 673 [1]. Notes and > references at [2]. These definitions are not perfect, but > lay the basis for tomorrow's teleconference discussion about > Unicode and text. > > text > A sequence of characters included in the Unicode character > set. Refer to Characters [3] in Extensible Markup Language > (XML) 1.0 (Third Edition) for more specific information about > the accepted character range. Do you need to define the accepted character range? If so, note that the range is different for instance for XML 1.1. > > Unicode > In this document, we use "Unicode" to refer to the Unicode > character set and not the character encoding. s/the character encoding/a character encoding There are at least three possible encodings for Unicode, UTF-8/16/32. > (@@ the Unicode character set may be encoded in ASCII, UTF-8, ASCII ? > UTF-16, etc. characters in the Unicode set can be created > with numeric character references - so there is a clear > separation between the character encoding and those > characters defined in the unicode character set that we > consider "text"- @@provide reference to I18N list? @@link to Unicode > spec?) Does this help? http://wwww.w3.org/International/tutorials/tutorial-char-enc/#defn1 see "Character sets, coded character sets, and encodings" > > non-text content > Non-text content is content that can not be represented by a > Unicode character or sequence of unicode characters. Non-text > content includes but is not limited to > * images and graphics, > * sound clips, movies, and animations, > * ASCII art (which may use several Unicode characters to > create an image) Providing text alternatives for non-text > content is addressed in Guideline 1.1, providing captions and > audio descriptions of multimedia is addressed in guideline > 1.2, and interacting with non-text content via scripts, > applets, and programmatic objects is addressed in guideline 4.2 . > hth RI > [1] <http://trace.wisc.edu/bugzilla_wcag/show_bug.cgi?id=673> > [2] <http://www.w3.org/2004/09/wcag-unicode.html> > [3] <http://w3.org/TR/2004/REC-xml-20040204/#charsets> > -- > wendy a chisholm > world wide web consortium > web accessibility initiative > http://www.w3.org/WAI/ > /-- > > >
Received on Thursday, 9 September 2004 16:13:17 UTC