refsect2 ::= title, para, (blockquote | itemizedlist | orderedlist | para | programlisting | screen | variablelist)*
refsect2 elements may take an id attribute. id attributes take name tokens, used for building links for internal cross references.
Format as a block element with the title followed by the rest of the content. If the id attribute is set, mark the location for cross referencing using the value of the attribute.