two column layout of acronyms example

documents/acronyms-example/acronyms-example.tex

@@ -39,6 +39,7 @@ vel eros fermentum vestibulum id at ipsum. In vitae orci mauris, et
 rhoncus odio. Pellentesque habitant morbi tristique senectus et netus 
 et malesuada fames ac turpis egestas.
 \clearpage
+\twocolumn
 \begin{acronym}[SQL]
  \acro{KDE}{K Desktop Environment}
  \acro{SQL}{Structured Query Language}
@@ -86,5 +87,5 @@ et malesuada fames ac turpis egestas.
  \acro{SQL}{Structured Query Language}
  \acro{Bash}{Bourne-again shell}
 \end{acronym}
-
+\onecolumn
 \end{document}

tikz/ueberlappung-kaestchen-torus/Makefile

@@ -0,0 +1,31 @@
+SOURCE = ueberlappung-kaestchen-torus
+DELAY = 80
+DENSITY = 300
+WIDTH = 512
+
+make:
+	pdflatex $(SOURCE).tex -output-format=pdf
+	make clean
+
+clean:
+	rm -rf  $(TARGET) *.class *.html *.log *.aux *.data *.gnuplot
+
+gif:
+	pdfcrop $(SOURCE).pdf
+	convert -verbose -delay $(DELAY) -loop 0 -density $(DENSITY) $(SOURCE)-crop.pdf $(SOURCE).gif
+	make clean
+
+png:
+	make
+	make svg
+	inkscape $(SOURCE).svg -w $(WIDTH) --export-png=$(SOURCE).png
+
+transparentGif:
+	convert $(SOURCE).pdf -transparent white result.gif
+	make clean
+
+svg:
+	#inkscape $(SOURCE).pdf --export-plain-svg=$(SOURCE).svg
+	pdf2svg $(SOURCE).pdf $(SOURCE).svg
+	# Necessary, as pdf2svg does not always create valid svgs:
+	inkscape $(SOURCE).svg --export-plain-svg=$(SOURCE).svg

tikz/ueberlappung-kaestchen-torus/Readme.md

@@ -0,0 +1,3 @@
+Compiled example
+----------------
+![Example](ueberlappung-kaestchen-torus.png)

tikz/ueberlappung-kaestchen-torus/ueberlappung-kaestchen-torus.tex

@@ -0,0 +1,54 @@
+% The following answers were used to create this image:
+% - http://tex.stackexchange.com/a/45824/5645 - Grid
+% - http://tex.stackexchange.com/a/373/5645 - Torus
+\documentclass[border=2pt]{standalone}
+\usepackage{amsmath,amssymb}
+\usepackage{tikz}
+\usetikzlibrary{patterns,arrows,positioning}
+
+\begin{document}
+\begin{tikzpicture}
+\tikzstyle{point}=[circle,thick,draw=black,fill=black,inner sep=0pt,minimum width=4pt,minimum height=4pt]
+\newcommand*{\xMin}{0}%
+\newcommand*{\xMax}{6}%
+\newcommand*{\yMin}{0}%
+\newcommand*{\yMax}{6}%
+
+\draw (-3.5,0) .. controls (-3.5,2) and (-1.5,2.5) .. (0,2.5);
+\draw[xscale=-1] (-3.5,0) .. controls (-3.5,2) and (-1.5,2.5) .. (0,2.5);
+\draw[rotate=180] (-3.5,0) .. controls (-3.5,2) and (-1.5,2.5) .. (0,2.5);
+\draw[yscale=-1] (-3.5,0) .. controls (-3.5,2) and (-1.5,2.5) .. (0,2.5);
+
+\draw (-2,.2) .. controls (-1.5,-0.3) and (-1,-0.5) .. (0,-.5) .. controls (1,-0.5) and (1.5,-0.3) .. (2,0.2);
+\draw (-1.75,0) .. controls (-1.5,0.3) and (-1,0.5) .. (0,.5) .. controls (1,0.5) and (1.5,0.3) .. (1.75,0);
+
+
+\begin{scope}[shift={(-12,-3)}]
+    \foreach \i in {\xMin,...,\xMax} {
+        \draw [very thin,gray] (\i,\yMin) -- (\i,\yMax)  node [below] at (\i,\yMin) {$\i$};
+    }
+    \foreach \i in {\yMin,...,\yMax} {
+        \draw [very thin,gray] (\xMin,\i) -- (\xMax,\i) node [left] at (\xMin,\i) {$\i$};
+    }
+
+    \begin{scope}[shift={(14,2)}]
+        \node (P) at (0.4,0.9) {};
+        \node (Q) at (0.9,0.4) {};
+        \draw [red] (P) rectangle (Q);
+        \draw (0.65, 0.6) node[red] {*};
+    \end{scope}
+
+    \foreach \x in {0,1,2,3,4,5} {
+        \foreach \y in {0,1,2,3,4,5} {
+            \begin{scope}[shift={(\x,\y)}]
+                \node (P) at (0.4,0.9) {};
+                \node (Q) at (0.9,0.4) {};
+                \draw [red] (P) rectangle (Q);
+                \draw (0.65, 0.6) node[red] {*};
+            \end{scope}
+        }
+    }
+\end{scope}
+    \draw (-4.5, 0) node[below] {$\xrightarrow{\text{\;\;\;\;\;\;\;\;}}$};
+\end{tikzpicture}
+\end{document}