Defines the @frame attribute, its values, and default for use in attribute lists in NISO JATS table model (based on and designed to be converted easily to the XHTML 1.1 table model).
<!ENTITY % frame.attrib "frame ( void | above | below | hsides | lhs | rhs | vsides | box | border ) #IMPLIED" >
JATS-xhtml-table-1.mod