Use cascading style sheets. In the class .Contentitem, add the property LIST-STYLE-IMAGE. Although this cannot be done alone with PROC TEMPLATE, it can be done with the use of a CSS. Create a CSS with the STYLESHEET= option on the ODS statement. This is a powerful option that allows you the ability to read or create a CSS on the fly. See the full topic about CSS and ODS for more information. View output.

   .ContentItem{
    Font-Family: Arial, Helvetica, Helv;
    Font-Size:small;
    Font-weight:normal;
    Font-style:normal;
    Color:#002288;
    BackGround-Color:#B0B0B0;
    Margin-Left:6pt;
    List-Style-image: url(arrow_1.gif);
    }

   ods html body='gbody.html'
        contents='gcont.html'
        frame='gframe.html' stylesheet=(url='temp.css');

   proc print data=sasuser.class;
      title 'Adding GIF files to the TOC';
   run;

   proc freq data=sasuser.class;
   run;

   ods html close;

See also the full PROC TEMPLATE FAQ and Concepts.

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