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
Path to file with image description; adds longdesc attribute. |
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For example, to provide an alt attribute for each graphic, place a GraphAlt PI marker just before the image.