--- a/notes/tex/preamble.tex	Mon Jul 15 23:54:45 2013 +0200
+++ b/notes/tex/preamble.tex	Mon Jul 22 23:56:37 2013 +0200
@@ -42,3 +42,5 @@
 \tikzstyle{machine} = [rectangle, draw, minimum width=2cm, minimum height=1cm, inner sep=3mm, fill=tumgreen!10]
 
 \newcommand{\pcp}[2]{ \begin{tabu}{c} #1 \\ \tabucline{-} #2 \\ \end{tabu} }
+\newcommand{\chomsky}[4]{\draw[rect, #1, fill=#1!10, #2] ({5.5 - #3 * 1}, {0 + #3 * 0.3}) rectangle ({-5.5 + #3 * 1}, {7 - #3 * 1.2}) node[caption] {#4};}
+\newcommand{\langclass}[4]{\draw[rect, #1, fill=#1!20, #2] ({5.2 - #3 * 0.5}, {0 + #3 * 0.12}) rectangle ({-5.2 + #3 * 0.5}, {7.5 - #3 * 0.75}) node[caption] {#4};}