diff --git a/pub/src/dualplot.cpp b/pub/src/dualplot.cpp
index 89f85f633c6dc6df2dc48e0dc0c666d97357e4e5..6b51aedb1db5365376c206f23f4b5807eb7375f4 100644
--- a/pub/src/dualplot.cpp
+++ b/pub/src/dualplot.cpp
@@ -229,7 +229,6 @@ void CPlot::addSpec( bool as_line, int style_no,
     if( !nout )
         throw "no points in frame: " + info;
 
-
     // Postscript copy:
     snprintf( outlin, mLin, "\n%3u [", ++ps_snum );
     ps_accu.push_back( outlin );
@@ -259,6 +258,7 @@ void CPlot::addSpec( bool as_line, int style_no,
     }
 }
 
+
 //! Live display as prepared by addSpec.
 
 void CPlot::showSpecs()
@@ -388,6 +388,7 @@ namespace NPloWin {
     void initialize();
 };
 
+
 //! Initialize plot windows.
 
 void NPloWin::initialize()