void rootlogon ()
{
  cout << " ~/.rootrcdir/rootlogon.C is executing.\n";

  gROOT->SetStyle("Plain");      // Switches off the ROOT default style
  //gPad->UseCurrentStyle();       // this makes everything black and white,
                              // removing the default red border on images
  gROOT->ForceStyle();          // forces the style chosen above to be used,
                              // not the style the rootfile was made with

  gStyle->SetOptStat(0);  // no statistics
  //  gStyle->SetOptStat(0);  //no statistics _or_
  //gStyle->SetOptStat(11111111);
  // -->all statistics (the more 1's you put,the more statistics you get)
  //  gStyle->SetOptLogy();  //log. scale


  gStyle->SetOptTitle(0);  //no title
  //gStyle->SetPalette(1);   // Better color palette

  // Colours can be accessed by numbers (like in PAW) or with names: 
  // enum EColor { kWhite, kBlack, kRed, kGreen, kBlue, kYellow,
  //               kMagenta, kCyan };

  gStyle->SetCanvasColor(kWhite);     // background is no longer mouse-dropping
  //white
  gStyle->SetPalette(1,0);            // blue to red false color palette. Use 9
  //for b/w
  //gStyle->SetFillColor(0);  //white fill color
  gStyle->SetFrameBorderMode(0);  //no frame border
  gStyle->SetCanvasBorderMode(0);  //no canvas border
  gStyle->SetPadBorderMode(0);
  gStyle->SetPaintTextFormat("5.2f");  // What precision to put numbers if 
  //plotted with "TEXT"
  gStyle->SetMarkerStyle(20);
  gStyle->SetTitleSize(0.05,"xy");

  // For publishing:
  //gStyle->SetTextSize(1.1);
  //gStyle->SetLabelSize(0.06,"xy");
  //gStyle->SetTitleSize(0.06,"xy");
  //gStyle->SetTitleOffset(1.2,"x");
  //gStyle->SetTitleOffset(1.0,"y");
  //gStyle->SetPadTopMargin(0.1);
  //gStyle->SetPadRightMargin(0.1);
  //gStyle->SetPadBottomMargin(0.16);
  //gStyle->SetPadLeftMargin(0.12);

}