%Character.datatype; Table Character Alignment Attribute Data Type
The attribute declared value (typically CDATA) to be used for the @char horizontal alignment attribute in tables.
The NISO JATS table model parameter entity is used in the same way as the equivalent parameter entity in the XHTML 1.1 table model. Since this parameter entity was named in the same way as the XHTML 1.1 Tag Set equivalent, it does not follow the naming conventions for this Tag Set: it is in mixed (not lower) case, and the separator character is a period (not a hyphen).
<!ENTITY % Character.datatype "CDATA" >