bits and pieces toward the hidden text handling:
the property that contains "hiddenness" is called "display", with possible values "none" for hidden text and "" for normal text. added variables and fuctions for hidden property to xap_Dlg_FontChooser; changes to platform code required added toggleHidden() to edit methods; a toolbar button needs to be added. made fp_Run::canContainPoint into non-virtual and added new protected virtual _canContainPoint(). files: fp_Run.h/cpp, fp_TextRun.cpp, fp_Line.cpp, fv_View_protected.cpp, pp_Property.cpp, ap_EditMethods.cpp, xap_Dlg_FontChooser.h/cpp Tomas
