anchor.diff:      {@VFD_HEAD_END: MainForm}
       Files: TList; // current open help files.
       Debug: boolean;
  +    mru: TfpgMRU;
  +    FFileOpenRecent: TfpgMenuItem;
   
       // while loading... so owe can display progress
       LoadingFilenameList: TStringList;
  
positive.code:     procedure   miHelpAboutFPGui(Sender: TObject);
      procedure   miDebugHeader(Sender: TObject);
      procedure   miDebugHex(Sender: TObject);
      procedure   btnShowIndex(Sender: TObject);
      procedure   btnGoClicked(Sender: TObject);
      procedure   tvContentsChange(Sender: TObject);
  
negative.code: 
  uses
    SysUtils, Classes, fpg_base, fpg_main, fpg_form, fpg_panel, fpg_tab,
    fpg_tree, fpg_splitter, fpg_menu, fpg_button, fpg_listbox,
    fpg_label, fpg_edit, fpg_radiobutton, fpg_progressbar, fpg_mru,
    HelpFile, RichTextView;
  
  type
  