An incomplete rule was encountered.
          #2075   Compile-time error
          An incomplete rule was encountered.
Additional Information
 The 'X' rule must have at least one '%c' format item or SUPPRESS
action, but none were encountered.
     where X is data-content, element,
marked-section cdata,
marked-section rcdata,
marked-section ignore,
or markup-comment.
Recovery
Compilation continues but no compiled source code file will be saved.
Explanation
OmniMark requires that each of the above rules process its content,
either with a %c format item or a suppress action.