diff --git a/Lectures/L21_HoslisticAndDigDeeper/HolisticAndDigDeeper.pdf b/Lectures/L21_HoslisticAndDigDeeper/HolisticAndDigDeeper.pdf
index 2c656751e1a84e621b22671e544b3990e720d585..ffdea88ad4bcba87a17e559953396444582cd998 100644
Binary files a/Lectures/L21_HoslisticAndDigDeeper/HolisticAndDigDeeper.pdf and b/Lectures/L21_HoslisticAndDigDeeper/HolisticAndDigDeeper.pdf differ
diff --git a/Lectures/L21_HoslisticAndDigDeeper/HolisticAndDigDeeper.tex b/Lectures/L21_HoslisticAndDigDeeper/HolisticAndDigDeeper.tex
index a3ebe53c7c4620de58171faa533f684e3d3be27b..759a88716de5797b59c2a6eeebd996536cee77b6 100755
--- a/Lectures/L21_HoslisticAndDigDeeper/HolisticAndDigDeeper.tex
+++ b/Lectures/L21_HoslisticAndDigDeeper/HolisticAndDigDeeper.tex
@@ -207,7 +207,7 @@ From Developer Interviews:
   %\item Documentation with code, opposed to code with documentation %like doxygen etc.
   \item Tangle extracts code
   \item Weave extracts docs (as LaTeX, html, pdf, text, etc.)
-  \item CWEB, Sweave (R), Jupyter, emacs org mode, Maple worksheets, etc.
+  \item CWEB, Sweave (R), Jupyter, \href{https://github.com/JacquesCarette/Drasil/wiki/Getting-Started-with-Org-Mode} {emacs org mode}, Maple worksheets, etc.
   \end{itemize}
 
   \begin{tikzpicture}[remember picture,overlay]