- From: Wendy A Chisholm <chisholm@trace.wisc.edu>
- Date: Fri, 23 Oct 1998 12:41:45 -0500
- To: w3c-wai-gl@w3.org
Hi, In the current public draft of the guidelines (19980918) in the section on alternative text (A.1), there is a technique devoted to OBJECT. In the proposed rewording that follows, the information about OBJECT has been incorporated into the discussions on how to provide text for images and applets (techniques 1 and 2). This was done to make the techniques more long-lasting. Note also that the HTML specific stuff is an EXAMPLE of how to satisfy the technique rather than part of the technique wording. thoughts? --the editors A.1. Provide alternative text for all images, applets, and image maps. [Priority 1] This includes images used as submit buttons, bullets in lists, and all of the links within an image map as well as invisible images used to layout a page. Alternative text does not describe the visual appearance of an image, applet, or image map. Rather, it is used to represent the function that the image, applet, or image map performs whether it be decorative, informative, or for purposes of layout. If alternative text is not provided, users who are blind, have low vision, or any user who cannot or has chosen not to view graphics will not know the purpose of the visual components on the page. Since "bare" ASCII art (characters that form images) does not allow alt-text, it must be marked up specially for this purpose. Techniques: Provide alternative text for all images (e.g., via the "alt" attribute of IMG, or via "title" or within the content of OBJECT). [Priority 1] Note. This includes images used as image maps, spacers, bullets in lists, and links. Provide alternative text for all applets and other programatic objects(e.g., via the "alt" attribute or within the content of APPLET, or via the "title" attribute or within the content of OBJECT). [Priority 1] (see also A.10) For all image map links * Provide alternative text (e.g., via the "alt" attribute of AREA). [Priority 1] * Provide redundant textual links. [Priority 2 if client-side image maps are used, Priority 1 for server-side] Provide alternative text for graphical buttons (e.g., via the "alt" attribute for INPUT type="image") [Priority 1] Do not use an image map to create a set of buttons in a form. Instead, use separate buttons or images (accompanied by alternative text). [Priority 2] Replace ASCII art with an image and alternative text. [Priority 1 or 2 depending on the importance of the information (e.g., an important chart)] Note. If the description of (important) ASCII art is long, provide a description in addition to alternative text (see A.2).
Received on Friday, 23 October 1998 13:48:47 UTC