- From: Wendy A Chisholm <wendy@w3.org>
- Date: Fri, 18 Aug 2000 18:40:00 -0400
- To: w3c-wai-gl@w3.org
Ian and I took an action item at the 10 August 2000 telecon to propose a clarification of 7.4 based on the discussion on the call [1]. Here is the proposed text: <proposal> 8. Clarification of checkpoint 7.4 Added: xx August 2000 Type: Clarification Refers to: Checkpoint 7.4 of 5 May 1999 version Description (and correction): Checkpoint 7.4 says, <blockquote> Until user agents provide the ability to stop the refresh, do not create periodically auto-refreshing pages. [Priority 2] For example, in HTML, don't cause pages to auto-refresh with "HTTP-EQUIV=refresh" until user agents allow users to turn off the feature. </blockquote> This checkpoint is trying to address two issues: 1. Disorientation due to unexpected changes in content. Users should expect changes in content when they follow a link or submit a form. However, the author may cause unexpected changes to content by using scripts or other markup. The author should inform the user of changes that will occur without explicit user interaction. For example, if pressing a submit button will cause an intermediate page to appear before the final results are displayed, inform the user in advance. In short, warn the user of what will happen without their explicit interaction. 2. Response time not long enough to interact or comprehend the content before it changes. To ensure that users can interact with and understand content in a time frame suitable to their needs, do not cause automatic content changes at regular intervals (such as a page of stock quotes that is updated every 3 minutes). There is an "until user agents" clause that is not yet satisfied for this checkpoint. Note that the User Agent Accessibility Guidelines will require user agents to provide the ability for users to update pages manually. </proposal> --wendy [1] http://www.w3.org/WAI/GL/2000/08/10-minutes.html -- wendy a chisholm world wide web consortium web accessibility initiative madison, wi usa tel: +1 608 663 6346 /--
Received on Friday, 18 August 2000 18:37:43 UTC