diff --git a/cheat-sheets/vim/vim.pdf b/cheat-sheets/vim/vim.pdf
index 450d216..079a1cc 100644
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diff --git a/cheat-sheets/vim/vim.tex b/cheat-sheets/vim/vim.tex
index 91dab70..000cc5c 100644
--- a/cheat-sheets/vim/vim.tex
+++ b/cheat-sheets/vim/vim.tex
@@ -33,6 +33,8 @@
 \begin{tabular}{@{}ll@{}}
 \keys{i}    & Insert before cursor \\
 \keys{I}    & Insert before line \\
+\keys{r}    & Replace one character \\
+\keys{R}    & Enter insert mode, but replace \\
 \end{tabular}
 
 \section{Motion}
diff --git a/presentations/Diskrete-Mathematik/logos/graph-titleimage.png b/presentations/Diskrete-Mathematik/logos/graph-titleimage.png
index fff30a0..c49181b 100644
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