Open a new body file and specify the base anchor name for the graphs of individual countries.Assigning a new body file closes YEAR96_BODY.HTML. Because all the graphs generated by the BY-group processing are stored in one file, each one is automatically assigned an anchor name. ANCHOR= specifies a base name for these anchors. 
ods html body='country_body.html'
         anchor='country'
         gfootnote
         path=odsout;