anchor.diff:  
   snapshot_init() ->
       ref_add(?ANALYSIS_RET, undef),
  -    ref_add(?FILES, []),
  +    init_files(),
       ref_add(?SNAPSHOT_PATH, "").
   
   %%%----------------------------------------------------------------------
  
positive.code:             case checkDuplicates(?FILES, File) of
                  false ->
                      addListItems(?MODULE_LIST, File),
                      snapshot_add_file(File),
                      ref_add(?FILE_PATH, getDirectory());
                  Duplicates ->
                      wxTextCtrl:appendText(ref_lookup(?ERROR_TEXT),
  
negative.code: 	       true ->
  		    wxControlWithItems:setSelection(ModuleList, Selection)
  	    end
      end,
      remove_file(File).
  
  %% Kill the analysis process.
  stop() ->
  