%frame.attrib; 

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).
Declaration
<!ENTITY % frame.attrib
     "frame        ( void
                   | above
                   | below
                   | hsides
                   | lhs
                   | rhs
                   | vsides
                   | box
                   | border )               #IMPLIED"
>