out as follows. SWCLOS firstly invokes the function bound to <a 
  href="03Resource.htm#SWCLOSuri2symbol-name-mapping-fun"><b>*uri2symbol-name-mapping-fun*</b></a>. 
  If the returned value is a symbol, it is used. If the returned value is a 
  string, a symbol is created with the name and the associated package to the 
  URI. If SWCLOS does not know the associated package, then the system invokes 
  the function that is bound to symbol <b>*uri2symbol-package-mapping-fun*</b>, 
  and create a symbol. </li>
