diff --git a/article-style-st-babylon.css b/article-style-st-babylon.css
index 9eff7175..73fbdf65 100644
--- a/article-style-st-babylon.css
+++ b/article-style-st-babylon.css
@@ -6,7 +6,6 @@ html
 body
 {
 	background: white;
-	font-size: 13px;
 }
 
 .gdarticle
diff --git a/article-style-st-lingvo.css b/article-style-st-lingvo.css
index b2e47958..8da59179 100644
--- a/article-style-st-lingvo.css
+++ b/article-style-st-lingvo.css
@@ -40,7 +40,6 @@ a:hover
 
 .gddictname
 {
-	 font-size: 13px;
   font-weight: normal;
   
   float: right;
@@ -58,7 +57,6 @@ a:hover
 
 .gdactivearticle .gddictname
 {
-	 font-size: 13px;
   font-weight: normal;
   
   float: right;
diff --git a/article-style-st-modern.css b/article-style-st-modern.css
index 1a72ccd7..e37e784b 100644
--- a/article-style-st-modern.css
+++ b/article-style-st-modern.css
@@ -87,7 +87,6 @@ a:hover
 
 .gdactivearticle .gddictname
 {
-  font-size: 13px;
   font-weight: normal;
   margin: -6px;
   margin-bottom: 5px;
diff --git a/article-style.css b/article-style.css
index e0e54be7..16ce7887 100644
--- a/article-style.css
+++ b/article-style.css
@@ -5,7 +5,6 @@ body
 {
   background: #fefdeb;
   font-family: Tahoma, Verdana, "Lucida Sans Unicode", sans-serif;
-  font-size: 13px;
 }
 
 /* This stylesheet is used to highligh current selection when doing a search.
@@ -611,15 +610,15 @@ div.xdxf
 
 .epwing_narrow_font
 {
-  width: 7px;
-  height: 13px;
+  width: 0.5em;
+  height: 1em;
   vertical-align: -15%;
 }
 
 .epwing_wide_font
 {
-  width: 13px;
-  height: 13px;
+  width: 1em;
+  height: 1em;
   vertical-align: -15%;
 }
 
@@ -1600,7 +1599,7 @@ in the bottom-right corner of the content area */
 .mwiki #bodyContent a.external,
 .mwiki #bodyContent a[href ^="gopher://"] {
 	background: url(external.png) center right no-repeat;
-	padding-right: 13px;
+        padding-right: 1em;
 }
 .mwiki #bodyContent a[href ^="https://"],
 .mwiki .link-https {
@@ -1636,7 +1635,7 @@ in the bottom-right corner of the content area */
 .mwiki #bodyContent a.external[href $=".wma"], .mwiki #bodyContent a.external[href $=".WMA"],
 .mwiki .link-audio {
 	background: url("audio.png") center right no-repeat;
-	padding-right: 13px;
+        padding-right: 1em;
 }
 .mwiki #bodyContent a.external[href $=".ogm"], .mwiki #bodyContent a.external[href $=".OGM"],
 .mwiki #bodyContent a.external[href $=".avi"], .mwiki #bodyContent a.external[href $=".AVI"],
@@ -1644,7 +1643,7 @@ in the bottom-right corner of the content area */
 .mwiki #bodyContent a.external[href $=".mpg"], .mwiki #bodyContent a.external[href $=".MPG"],
 .mwiki .link-video {
 	background: url("video.png") center right no-repeat;
-	padding-right: 13px;
+        padding-right: 1em;
 }
 .mwiki #bodyContent a.external[href $=".pdf"], .mwiki #bodyContent a.external[href $=".PDF"],
 .mwiki #bodyContent a.external[href *=".pdf#"], .mwiki #bodyContent a.external[href *=".PDF#"],
diff --git a/articleview.cc b/articleview.cc
index 06fba01b..635e03b6 100644
--- a/articleview.cc
+++ b/articleview.cc
@@ -2482,34 +2482,6 @@ void ArticleView::highlightFTSResults()
 {
   closeSearch();
 
-  const QUrl & url = ui.definition->url();
-
-  bool ignoreDiacritics = Utils::Url::hasQueryItem( url, "ignore_diacritics" );
-
-  QString regString = Utils::Url::queryItemValue( url, "regexp" );
-  if( ignoreDiacritics )
-    regString = gd::toQString( Folding::applyDiacriticsOnly( gd::toWString( regString ) ) );
-  else
-    regString = regString.remove( AccentMarkHandler::accentMark() );
-
-  QRegularExpression regexp;
-  if( Utils::Url::hasQueryItem( url, "wildcards" ) )
-    regexp.setPattern( wildcardsToRegexp( regString ) );
-  else
-    regexp.setPattern( regString );
-
-  QRegularExpression::PatternOptions patternOptions =
-    QRegularExpression::DotMatchesEverythingOption | QRegularExpression::UseUnicodePropertiesOption |
-    QRegularExpression::MultilineOption | QRegularExpression::InvertedGreedinessOption;
-  if( !Utils::Url::hasQueryItem( url, "matchcase" ) )
-    patternOptions |= QRegularExpression::CaseInsensitiveOption;
-  regexp.setPatternOptions( patternOptions );
-
-  if( regexp.pattern().isEmpty() || !regexp.isValid() )
-    return;
-
-  sptr< AccentMarkHandler > marksHandler = ignoreDiacritics ? new DiacriticsHandler : new AccentMarkHandler;
-
   // Clear any current selection
   if( ui.definition->selectedText().size() )
   {
@@ -2519,6 +2491,33 @@ void ArticleView::highlightFTSResults()
   ui.definition->page()->toPlainText(
     [ & ]( const QString pageText )
     {
+      const QUrl & url = ui.definition->url();
+
+      bool ignoreDiacritics = Utils::Url::hasQueryItem( url, "ignore_diacritics" );
+
+      QString regString = Utils::Url::queryItemValue( url, "regexp" );
+      if( ignoreDiacritics )
+        regString = gd::toQString( Folding::applyDiacriticsOnly( gd::toWString( regString ) ) );
+      else
+        regString = regString.remove( AccentMarkHandler::accentMark() );
+
+      QRegularExpression regexp;
+      if( Utils::Url::hasQueryItem( url, "wildcards" ) )
+        regexp.setPattern( wildcardsToRegexp( regString ) );
+      else
+        regexp.setPattern( regString );
+
+      QRegularExpression::PatternOptions patternOptions =
+        QRegularExpression::DotMatchesEverythingOption | QRegularExpression::UseUnicodePropertiesOption |
+        QRegularExpression::MultilineOption | QRegularExpression::InvertedGreedinessOption;
+      if( !Utils::Url::hasQueryItem( url, "matchcase" ) )
+        patternOptions |= QRegularExpression::CaseInsensitiveOption;
+      regexp.setPatternOptions( patternOptions );
+
+      if( regexp.pattern().isEmpty() || !regexp.isValid() )
+        return;
+      sptr< AccentMarkHandler > marksHandler = ignoreDiacritics ? new DiacriticsHandler : new AccentMarkHandler;
+
       marksHandler->setText( pageText );
 
       QRegularExpressionMatchIterator it = regexp.globalMatch( marksHandler->normalizedText() );
@@ -2547,7 +2546,7 @@ void ArticleView::highlightFTSResults()
 
       ftsSearchMatchCase = Utils::Url::hasQueryItem( url, "matchcase" );
 
-      QWebEnginePage::FindFlags flags( 0 );
+      QWebEnginePage::FindFlags flags( QWebEnginePage::FindBackward );
 
       if( ftsSearchMatchCase )
         flags |= QWebEnginePage::FindCaseSensitively;
@@ -2758,21 +2757,16 @@ void ResourceToSaveHandler::downloadFinished()
   }
 }
 
-ArticleViewAgent::ArticleViewAgent(QObject *parent)
-  : QObject{parent}
+ArticleViewAgent::ArticleViewAgent( ArticleView * articleView ) : QObject( articleView ), articleView( articleView )
 {
-
 }
-ArticleViewAgent::ArticleViewAgent(ArticleView *articleView)
-  : articleView(articleView)
+
+void ArticleViewAgent::onJsActiveArticleChanged( QString const & id )
 {
-
+  articleView->onJsActiveArticleChanged( id );
 }
 
-void ArticleViewAgent::onJsActiveArticleChanged(QString const & id){
-    articleView->onJsActiveArticleChanged(id);
-}
-
-void ArticleViewAgent::linkClickedInHtml(QUrl const & url){
-    articleView->linkClickedInHtml(url);
+void ArticleViewAgent::linkClickedInHtml( QUrl const & url )
+{
+  articleView->linkClickedInHtml( url );
 }
diff --git a/articleview.hh b/articleview.hh
index a7c501ab..487993c9 100644
--- a/articleview.hh
+++ b/articleview.hh
@@ -433,18 +433,17 @@ private:
 
 class ArticleViewAgent : public QObject
 {
-    Q_OBJECT
-    ArticleView* articleView;
-  public:
-    explicit ArticleViewAgent(QObject *parent = nullptr);
-    ArticleViewAgent(ArticleView* articleView);
+  Q_OBJECT
+  ArticleView * articleView;
 
-  signals:
+public:
+  ArticleViewAgent( ArticleView * articleView );
 
-  public slots:
-    Q_INVOKABLE void onJsActiveArticleChanged(QString const & id);
-    Q_INVOKABLE void linkClickedInHtml( QUrl const & );
+signals:
 
+public slots:
+  Q_INVOKABLE void onJsActiveArticleChanged( QString const & id );
+  Q_INVOKABLE void linkClickedInHtml( QUrl const & );
 };
 
 #endif
diff --git a/dsl.cc b/dsl.cc
index 410b8a9d..6991e053 100644
--- a/dsl.cc
+++ b/dsl.cc
@@ -345,29 +345,6 @@ DslDictionary::~DslDictionary()
 
 //////// DslDictionary::deferredInit()
 
-class DslDeferredInitRunnable: public QRunnable
-{
-  DslDictionary & dictionary;
-  QSemaphore & hasExited;
-
-public:
-
-  DslDeferredInitRunnable( DslDictionary & dictionary_,
-                           QSemaphore & hasExited_ ):
-    dictionary( dictionary_ ), hasExited( hasExited_ )
-  {}
-
-  ~DslDeferredInitRunnable()
-  {
-    hasExited.release();
-  }
-
-  virtual void run()
-  {
-    dictionary.doDeferredInit();
-  }
-};
-
 void DslDictionary::deferredInit()
 {
   if ( !Utils::AtomicInt::loadAcquire( deferredInitDone ) )
@@ -379,9 +356,7 @@ void DslDictionary::deferredInit()
 
     if ( !deferredInitRunnableStarted )
     {
-      QThreadPool::globalInstance()->start(
-        new DslDeferredInitRunnable( *this, deferredInitRunnableExited ),
-        -1000 );
+      QThreadPool::globalInstance()->start( [ this ]() { this->doDeferredInit(); }, -1000 );
       deferredInitRunnableStarted = true;
     }
   }
diff --git a/editdictionaries.cc b/editdictionaries.cc
index 0cce9843..79b17a32 100644
--- a/editdictionaries.cc
+++ b/editdictionaries.cc
@@ -88,14 +88,14 @@ void EditDictionaries::editGroup( unsigned id )
   }
 }
 
-void EditDictionaries::save()
+void EditDictionaries::save( bool rebuildGroups )
 {
   Config::Groups newGroups = groups->getGroups();
   Config::Group newOrder = orderAndProps->getCurrentDictionaryOrder();
   Config::Group newInactive = orderAndProps->getCurrentInactiveDictionaries();
 
-  if ( isSourcesChanged() )
-    acceptChangedSources( false );
+  if( isSourcesChanged() )
+    acceptChangedSources( rebuildGroups );
 
   if ( origCfg.groups != newGroups || origCfg.dictionaryOrder != newOrder ||
        origCfg.inactiveDictionaries != newInactive )
@@ -171,10 +171,7 @@ void EditDictionaries::rescanSources()
 void EditDictionaries::buttonBoxClicked( QAbstractButton * button )
 {
   if (ui.buttons->buttonRole(button) == QDialogButtonBox::ApplyRole) {
-    if ( isSourcesChanged() ) {
-      acceptChangedSources( true );
-    }
-    save();
+    save( true );
   }
 }
 
diff --git a/editdictionaries.hh b/editdictionaries.hh
index 9fa18e88..a2488d95 100644
--- a/editdictionaries.hh
+++ b/editdictionaries.hh
@@ -71,8 +71,9 @@ private:
 
   void acceptChangedSources( bool rebuildGroups );
 
-  void save();
-  
+  //the rebuildGroups was an initative,means to build the group if possible.
+  void save( bool rebuildGroups = false );
+
 private:
    
   Config::Class & cfg;
diff --git a/mdx.cc b/mdx.cc
index b19558f5..757de69f 100644
--- a/mdx.cc
+++ b/mdx.cc
@@ -315,8 +315,8 @@ public:
 
   virtual void setFTSParameters( Config::FullTextSearch const & fts )
   {
-//    if( ensureInitDone().size() )
-//      return;
+    if( ensureInitDone().size() )
+      return;
 
     can_FTS = fts.enabled
               && !fts.disabledTypes.contains( "MDICT", Qt::CaseInsensitive )
diff --git a/preferences.cc b/preferences.cc
index 46705bf2..357e652a 100644
--- a/preferences.cc
+++ b/preferences.cc
@@ -380,6 +380,8 @@ Config::Preferences Preferences::getPreferences()
   //bypass the first default
   if(ui.fontFamilies->currentIndex()>0)
     p.webFontFamily = ui.fontFamilies->currentText();
+  else
+    p.webFontFamily = "";
 
   p.helpLanguage =
     ui.helpLanguage->itemData(