34.2.3 Assigning WAI image attributes with PI markers

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.

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Parent Topic:  34.2 Applying WAI markup to images

Sibling Topics:

34.2.1 Following WAI guidelines for images

34.2.2 Assigning WAI image attributes with dedicated formats

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