Customizing the metamodel : Symbols: Creating and modifying : Analytic depictions
  
Analytic depictions
Analytic depictions enable you to visually identify different states of symbols on diagrams based on information specified in them. The symbol is adorned with a second metafile image that you specify (in usrprops.txt) to appear next to the symbol on any of its edges (right, left, top, or bottom).