diff --git a/presentation.tex b/presentation.tex
index 286084a..64e02d0 100644
--- a/presentation.tex
+++ b/presentation.tex
@@ -73,9 +73,9 @@
     \begin{columns}
     \column{0.94\textwidth}
     \begin{itemize}
-     \item A typesetting system made in 1978 (MS Word: 1990)
+     \item A typesetting system by Donald Knuth in 1978 (MS Word: 1990)
      \begin{itemize}
-      \item \LaTeX{} (1984): additions to base \TeX{} for ease of use
+      \item \LaTeX{} (Leslie Lamport 1984): additions to base \TeX{} for ease of use
       \item \hologo{ConTeXt} (1996, Dutch): additions to \TeX{} for more control
      \end{itemize}
      \item Document files are plain text (\texttt{.tex}, source code, markup)
@@ -85,7 +85,7 @@
       \item \hologo{XeTeX}
      \end{itemize}
      \item Highly extensible, heavily package-oriented: ``there's a package for that''
-     \item Available as a distribution: collection of engines and packages
+     \item Available as a distribution: engines + packages
      \item Free and open-source software, cross-platform
     \end{itemize}
     \column{0.06\textwidth}
@@ -220,11 +220,11 @@
       You can look at, compile and edit the examples given in the following slides on Overleaf.
       \begin{enumerate}
       \item Register and log into Overleaf: \href{https://www.overleaf.com/edu/wur}{https://www.overleaf.com/edu/wur}
-      \item Follow the invitation link: {\small \href{https://www.overleaf.com/read/ppqsqwqkyjpz}{https://www.overleaf.com/read/ppqsqwqkyjpz} }
+      \item Follow the invitation link: {\small \href{https://www.overleaf.com/read/mwsdymfkknjb}{https://www.overleaf.com/read/mwsdymfkknjb} }
       \item Read-only; to make your own copy, click \textbf{``Menu''} at the top left, then \textbf{``Copy project''} (you must be \textbf{logged in}!)
       \end{enumerate}
       \column{0.34\textwidth}
-      \qrcode[nolinks,height=\textwidth]{https://www.overleaf.com/read/ppqsqwqkyjpz}
+      \qrcode[nolinks,height=\textwidth]{https://www.overleaf.com/read/mwsdymfkknjb}
     \end{columns}
   \end{frame}
 
@@ -290,7 +290,7 @@
     \frametitle{More packages! \\ (\texttt{acronyms.tex}, \texttt{changes.tex}, \texttt{gantt.tex})}
     \begin{itemize}
      \item CTAN: Comprehensive \TeX{} Archive Network (\href{http://ctan.org}{http://ctan.org})
-     \item 6211 packages at the moment of writing! (was 5199 in 2017)
+     \item 6274 packages at the moment of writing! (was 5199 in 2017)
       \begin{itemize}
       \item \texttt{changes}: adding edit suggestions and comments!
       \item \texttt{glossaries}: Acronym management!