Elements added to make it easier to process journal articles in ways that are more accessible to people and devices with special needs, for example, the visually handicapped. The <alt-text> element holds a short phrase description of an object such as a graphic, and the <long-desc> element contains a more complete description of the content or intent of an object.
<!ENTITY % access.class "alt-text | long-desc" >
default-classes3.ent