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RE: Is there a source document for every Web resource?

From: Wendy A Chisholm <wendy@w3.org>
Date: Wed, 25 Feb 2004 14:32:42 -0500
Message-Id: <>
To: "John M Slatin" <john_slatin@austin.utexas.edu>, "Gregg Vanderheiden" <gv@trace.wisc.edu>, <w3c-wai-gl@w3.org>

At 11:57 AM 2/25/2004, John M Slatin wrote:
>Source database, yes-- but don't the data then flow into a template (or 
>something) which the user agent then uses to render what the user 
>reads/interacts with?
Here are concepts for consideration as defined by the device independence 
working group:

1. user agent - a client within a device that performs rendering
2. rendering - the act of converting perceivable units into physical 
effects that can be perceivable by a user and with which the user may be 
able to interact

3. delivery context - a set of attributes that characterizes the 
capabilities of the access mechanism and the preferences of the user
4. delivery unit - a set of material transferred between two cooperating 
web programs as the response to a single HTTP request
5. adaptation - a process of selection, generation or modification that 
produces one or more perceivable units in response to a requested uniform 
resource identifier in a given delivery context

6.  user experience - a set of material rendered by a user agent which may 
be perceived by a user and with which interaction may be possible
7. access mechanism - a combination of hardware (including one or more 
devices and network connections) and software (including one or more user 
agents) that allows a user to perceive and interact with the Web using one 
or more modalities (sight, sound, keyboard, voice etc.)
8. perceivable unit  - a set of material which, when rendered by a user 
agent, may be perceived by a user and with which interaction may be possible
9. web page - a collection of information, consisting of one or more 
resources intended to be rendered simultaneously, and identified by a 
single Uniform Resource Identifier

[1] <http://www.w3.org/TR/2003/NOTE-di-princ-20030901/#section-Delivery>
[2] <http://www.w3.org/TR/2003/NOTE-di-princ-20030901/#section-Authoring>
[3] <http://www.w3.org/TR/2003/NOTE-di-princ-20030901/#section-User>--

wendy a chisholm
world wide web consortium
web accessibility initiative
Received on Wednesday, 25 February 2004 14:32:52 UTC

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