<!-- these can occur at block or inline level -->
<!ENTITY % misc "ins | del | blink | script | noscript">
<!ENTITY % inline "a | %special; | %fontstyle; | %phrase; | %inline.forms;">
<!-- %Inline; covers inline or "text-level" elements -->
<!ENTITY % Inline "(#PCDATA | %inline; | %misc;)*">
[el]
<!--=================== 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
  >

<!--=================== Blinking Text ============================-->
<!--
  blink is allowed in block and inline content, but it's
  inappropriate to include block content within a blink element
  occurring in inline content.
-->
<!ELEMENT blink %Flow;>
<!ATTLIST blink
  %attrs;
>

Note: Fragment for illustration purposes only