%simple-display-noalt.class; Simple Display Elements Without Alternatives

The simplest and most basic of the Display Class elements, which may be allowed in many places, for example, inside other Display Class elements or inside the cell of a table; unlike the parameter entity %simple-display.class;, this parameter entity does not include the element <alternatives>.
<!ENTITY % simple-display-noalt.class
                        "array | code | graphic | media | preformat" >