add: PreviousReplaceWord = selValue; 
context: function SelectSuggestedWord(){  if (allowSelectWord)  {    var index = dialog.SuggestedList.selectedIndex;    if (index == -1)    {      dialog.ReplaceWordInput.value = PreviousReplaceWord;    }    else    {      var selValue = GetSelectedTreelistValue(dialog.SuggestedList);      dialog.ReplaceWordInput.value = selValue;    }    SetReplaceEnable();  }}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/d686044eb95f6af3230294f417fa9f567a7e642c/EdSpellCheck.js/clean/editor/ui/dialogs/content/EdSpellCheck.js