latex makro: margin box

workshops/latex/examples/minimal_standalone.tex

-\documentclass[ngerman]{standalone}
-\begin{document}
-  Hallo Welt!
-\end{document}

workshops/latex/latex.tex

@@ -8,6 +8,7 @@
 \usepackage{dtk-logos}
 \usepackage{hyperref}
 \usepackage{tikz}
+\usetikzlibrary{backgrounds, fit, matrix, calc}
 \usepackage{listings}
 \usepackage{calc}
 \graphicspath{{figures/}{examples/}}
@@ -25,6 +26,20 @@
   und der Aachener Linux User Group
 }
 
+
+\newcommand\marginbox[3][2pt]{
+  \begin{tikzpicture}[even odd rule, scale=1]
+    \node[anchor=north west] (text) {%
+      \begin{minipage}{#1}%
+        #2%
+      \end{minipage}%
+    };
+    \begin{pgfonlayer}{background}
+      \node[draw opacity=.5, draw=blue, line width=#1, inner sep=2pt, fit = (text)] {};
+    \end{pgfonlayer}
+  \end{tikzpicture}
+}
+
 \begin{document}
 
 \begin{frame}{OSAK \LaTeX-Workshop}{Installation einer \TeX-Distribution}
@@ -48,7 +63,7 @@
 \begin{frame}{Aufbau eines \LaTeX-Dokuments}
   \begin{columns}[T]
     \begin{column}{.35\textwidth}
-      \LaTeX übersetzt\\
+      {\LaTeX} übersetzt\\
       Text in ein PDF
       \begin{itemize}
         \item Formatierung durch\\Befehle im Text
@@ -76,8 +91,7 @@
         (2pt,-15pt) rectangle (\textwidth-2pt, -.4\textwidth+2pt);
         \node[anchor=north west] at (0pt, 0pt) {PDF viewer: HelloWorld.pdf};
         \node[anchor=north west] at (2pt, -15pt) {\parbox[t][.4\textwidth-27pt][c]{\textwidth-12pt}{%
-            \centering
-            \includegraphics{examples/minimal_standalone.pdf}
+            \hspace{.1\textwidth}Hallo Welt!
         }};
       \end{tikzpicture}
     \end{column}