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RE: Automatic loading of pages

From: Gregg Vanderheiden <po@Trace.wisc.edu>
Date: Sat, 25 Apr 1998 13:26:26 -0500
To: "WAI Markup Guidelines" <w3c-wai-gl@w3.org>
Message-ID: <001001bd7077$a8907320$e0f12299@vanderheiden>
There is a general accessibility prohibition against anything that
requires timed reading or a timed response by the use unless they can
easily defeat or reverse it.   If you go "BACK" to the page would it
time out and jump you off of it again?

If so then it should not be used or should be defeatable with a
browser setting.


-- ------------------------------
Gregg C Vanderheiden Ph.D.
Professor - Human Factors
Dept of Ind. Engr. - U of Wis.
Director - Trace R & D Center
GV@tracecenter.org , http://tracecenter.org/
FAX 608/262-8848
For a list of our listserves send "lists" to listproc@tracecenter.org

-----Original Message-----
From:	w3c-wai-gl-request@w3.org [mailto:w3c-wai-gl-request@w3.org] On
Behalf Of Charles (Chuck) Oppermann
Sent:	Saturday, April 25, 1998 11:04 AM
To:	WAI Markup Guidelines; 'Jason White'
Subject:	RE: Automatic loading of pages

I'm not certain that page refreshes are a accessibility problem.  This
is a
useful feature for:

* HTML based email and groupware
* news headlines
* stock tickers
* HTML based chat

I don't think that if a page has it, it should automatically fail.
applications present new data all the time, my Windows-based email
regularly checks for new messages and updates the list.  The same is
for my HTML based version of email.

What's annoying is when you are redirected from one page to another.
page has moved.  Click the link below or wait 1 second and we'll take

This is bad behavior for any application, HTML based or not and should
warned against, but refreshing the content of an current page should
not be

-----Original Message-----
From: Jason White [mailto:jasonw@ariel.ucs.unimelb.EDU.AU]
Sent: Friday, April 24, 1998 8:25 PM
To: WAI Markup Guidelines
Subject: Automatic loading of pages

During the past few months, I have noticed that some HTML documents
include a non-standard feature whereby a new page will be
loaded after a predetermined period of time has elapsed. I can not
remember what the non-standard markup is which gives rise to this
phenomenon, but I am sure that other members of the GL working group
be familiar with it. The guidelines should discourage authors from
this feature, not only because it is, presumably, a proprietary HTML
extension, but more importantly, in recognition of the observation
readers who are using screen access technology or for whom navigation
difficult may not have time to familiarise themselves with the initial
page before the prescribed time period expires.

Incidentally, Lynx 2.8 treats this construct as though it were an
link and does not load the new page automatically, regardless of the
timing which the author has specified. Perhaps this issue should also
brought to the attention of the user agent guidelines group.
Received on Saturday, 25 April 1998 14:39:13 UTC

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