<!--=================== Inserted/Deleted Text ============================-->
<!--
  ins/del are allowed in block and inline content, but it's
  inappropriate to include block content within an ins element
  occurring in inline content.
-->
<!ELEMENT ins %Flow;>
<!ATTLIST ins
  %attrs;
  cite        %URI;          #IMPLIED
  datetime    %Datetime;     #IMPLIED
  >
<!ELEMENT del %Flow;>
<!ATTLIST del
  %attrs;
  cite        %URI;          #IMPLIED
  datetime    %Datetime;     #IMPLIED
  >

Note: Fragment for illustration purposes only