34.2.3 Using a PI marker to
assign WAI image attributes
You can use PI markers to provide text equivalents
of graphic images. The attribute value in the text of a marker applies
to the next anchored frame in a flow after the PI marker. Each PI marker
name must start with Graph and end with the name
of the attribute. Valid PI marker names are as follows
GraphAlt
|
Short text equivalent of image; adds alt attribute.
|
GraphLongdesc
|
Path to file with image description; adds longdesc attribute.
|
GraphTitle
|
Long text description of image; adds title attribute.
|
For example, to provide an alt attribute for each graphic,
place a GraphAlt PI marker
just before the image.
Previous Topic: 34.2.2 Using
special paragraphs to assign WAI image attributes
Next Topic: 34.3 Applying WAI markup to links
Parent Topic: 34.2 Applying WAI markup to images
Sibling Topics:
34.2.1 Following
WAI guidelines for images
34.2.2 Using
special paragraphs to assign WAI image attributes