comm; prepare for split of overlong routine

pub/src/plot.cpp

@@ -25,8 +25,15 @@
 
 using boost::format;
 
+//**************************************************************************//
+//*  Auxiliary routines                                                    *//
+//**************************************************************************//
+
+//**************************************************************************//
+//*  Plot routine is accessible from the main menu                         *//
+//**************************************************************************//
 
-//! Plot spectrum.
+//! Plot set of spectra, or add to open plot.
 
 void NPlot::Plot( class CPlot *plot, bool add )
 {