Omni Systems, Inc. Mif2Go User's Guide, Version 55
> 25 Generating WAI markup for HTML > 25.2 Applying WAI markup to images > 25.2.2 Assigning WAI image attributes with dedicated formats
You can designate a paragraph format whose content will be the text alternative for the next anchored frame in a flow. For example, suppose you use paragraph format Figname for this purpose:
; Alt makes current para content into alt attribute for next img
Somewhere just before the image you would insert
a Figname paragraph containing the
name you want displayed as an alternate for the graphic image. Probably
you would make the Figname paragraph
conditional so it would not appear in print. The Delete
property would exclude the paragraph (as such) from HTML output; HTML
source would show the text of the Figname
paragraph as the value for the alt
attribute of the <img>
element.
For example, if you were to place a Figname
paragraph with the content “Cat in basket” just before the
image, in some browsers moving the pointer over the image would display
this content in a tooltip. However, in most current browsers, the tooltip
shows the content of the title
attribute rather
than the alt
attribute; and the alt
text is displayed only when the image is not displayed or is missing.
You can use a similar strategy to provide content
for the longdesc
attribute of the <img>
element; for example, using paragraph format Figdesc
for this purpose:.
; Longdesc makes current para content into longdesc attribute
The Delete
property
would exclude the paragraph from normal HTML text output.