Index: /trunk/MagicSoft/Mars/macros/tutorials/mirrordelay.C
===================================================================
--- /trunk/MagicSoft/Mars/macros/tutorials/mirrordelay.C	(revision 8319)
+++ /trunk/MagicSoft/Mars/macros/tutorials/mirrordelay.C	(revision 8320)
@@ -41,4 +41,7 @@
 
     TCanvas *c = new TCanvas;
+    c->SetBorderMode(0);
+    c->SetFrameBorderMode(0);
+    c->SetFillColor(kWhite);
 
     TF1 *f = (TF1*)fpar.DrawClone();
@@ -66,4 +69,7 @@
 
     c = new TCanvas;
+    c->SetBorderMode(0);
+    c->SetFrameBorderMode(0);
+    c->SetFillColor(kWhite);
     c->SetGridx();
     c->SetGridy();