7.1.8 Sdata Entity Mapping
The map-sdata-entity element type form declares that a reference to an internal SDATA entity whose name is equal to the value of the name attribute and/or whose replacement text is equal to the value of the text attribute represents the character whose name is given in the content of the element.  The content of the element shall be a single character name.
If the grove plan includes the entity-name property for the sdata node class, then an SDATA entity shall be mapped by first searching for a mapping for its name and then, if no mapping is found, searching for a mapping for its text.
<map-sdata-entity name="Alpha" text="[Alpha]">greekA</map-sdata-entity>
<map-sdata-entity name="V.Beta" text="[V.Beta]">greekB</map-sdata-entity>