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Re: ALT and TITLE Clarification

From: Roberto Scano (IWA/HWG) <rscano@iwa-italy.org>
Date: Fri, 7 Jan 2005 07:34:31 +0100
To: <chris.ridpath@utoronto.ca>, <gv@trace.wisc.edu>
Cc: <w3c-wai-gl@w3.org>
Message-Id: <200501070131921.SM03684@Inbox>

For point 1, alt text should not be always a description but is an alternative (textual).
thi point 2 expose one of these cases: images in a input botton, but also an image toolbar.
Think to a menubar: alt text for every image is an alternative text for it, not a description.
Another example: w3c conformance buttons for xhtml, css, ... These alt text don't made an image description but take on the text "Valid .....".



----- Messaggio originale -----
   >Da: "Chris Ridpath"<chris.ridpath@utoronto.ca>
   >Inviato: 06/01/05 21.52.14
   >A: "Gregg Vanderheiden"<gv@trace.wisc.edu>
   >Cc: "WAI WCAG List"<w3c-wai-gl@w3.org>
   >Oggetto: Re: ALT and TITLE Clarification
   >
   >
   >> We need a comprehensive proposal that addresses all of the element types
   >> that support ALT and TITLE.
   >>
   >The scope of this proposal covers the 4 elements that can contain an ALT
   >attribute:
   >IMG, INPUT, AREA and APPLET
   >
   >The proposal also applies to the A (anchor) element when it contains an IMG
   >element.
   >
   >Rules for *all* Alt text:
   >
   >1) Alt text must be a short description of the image
   >2) Any text in image must also be in Alt text
   >3) If image is decorative then Alt text is empty string ("")
   >
   >Rules for TITLE attribute:
   >
   >IMG element (not used as an anchor)
   >- TITLE attribute must be empty
   >
   >IMG element (used within an anchor)
   >- IMG TITLE attribute must be empty
   >- A (anchor) TITLE attribute describes link destination
   >
   >INPUT element (with TYPE of "image")
   >- TITLE attribute describes purpose of form (e.g. search or find)
   >
   >AREA element
   >- TITLE attribute describes link destination
   >
   >APPLET element
   >- deprecated so ignore
   >
   >The purpose of this proposal is to simplify the use of Alt text and make it
   >easier for assistive technologies to find meaning in HTML markup. In the
   >past, we've used Alt text for several purposes which has caused confusion
   >for both authors and readers. It would be easier for everyone if Alt text
   >was used for only one purpose and we used the TITLE attribute for other
   >purposes.
   >
   >Note: "decorative" as used here means "non-text content that does not
   >provide information, functionality, sensory experience and is neither
   >multimedia nor time-dependent interactive content" (text from guideline 1.1
   >SC 5)
   >
   >Note: Alt text as used here means the value of the ALT attribute.
   >
   >Comments appreciated.
   >
   >Cheers,
   >Chris
   >
   >----- Original Message ----- 
   >From: "Gregg Vanderheiden" <gv@trace.wisc.edu>
   >To: "'Chris Ridpath'" <chris.ridpath@utoronto.ca>
   >Sent: Tuesday, December 21, 2004 3:17 PM
   >Subject: RE: ALT and TITLE Clarification
   >
   >
   >> Chris
   >>
   >> We need a comprehensive proposal that addresses all of the element types
   >
   >

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Received on Friday, 7 January 2005 06:56:41 GMT

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