diff --git a/doc/pub/week42/ipynb/ipynb-week42-src.tar.gz b/doc/pub/week42/ipynb/ipynb-week42-src.tar.gz
index 1bce3c295..d0ff08389 100644
Binary files a/doc/pub/week42/ipynb/ipynb-week42-src.tar.gz and b/doc/pub/week42/ipynb/ipynb-week42-src.tar.gz differ
diff --git a/doc/pub/week42/ipynb/week42.ipynb b/doc/pub/week42/ipynb/week42.ipynb
index b1c81a271..43c87f402 100644
--- a/doc/pub/week42/ipynb/week42.ipynb
+++ b/doc/pub/week42/ipynb/week42.ipynb
@@ -3353,6 +3353,10 @@
     "We have already met such an example in project 1 when we tried to set up the design matrix for a two-dimensional function.\n",
     "Let us remind of this and recast it in terms of the mathematical operation of convolution.\n",
     "\n",
+    "\n",
+    "\n",
+    "\n",
+    "\n",
     "## Convolution Examples: Probability Theory\n",
     "\n",
     "\n",
diff --git a/doc/src/week42/week42.do.txt b/doc/src/week42/week42.do.txt
index fff0e917f..6a88d2d44 100644
--- a/doc/src/week42/week42.do.txt
+++ b/doc/src/week42/week42.do.txt
@@ -2640,6 +2640,10 @@ How can we use this? And what does it mean? Let us study some familiar examples
 We have already met such an example in project 1 when we tried to set up the design matrix for a two-dimensional function.
 Let us remind of this and recast it in terms of the mathematical operation of convolution.
 
+
+
+
+
 !split
 ===== Convolution Examples: Probability Theory =====