--- a/graphics.sty	Mon Sep 15 09:36:02 2014 +0100
+++ b/graphics.sty	Sun Sep 21 11:46:49 2014 +0100
@@ -1,3 +1,12 @@
 \usepackage{tikz}
 \usepackage{pgf}
-\usetikzlibrary{plotmarks}
+\usetikzlibrary{positioning}
+\usetikzlibrary{calc}
+\usepackage{graphicx} 
+
+\newenvironment{bubble}[1][]{%
+\begin{tikzpicture}%
+\draw (0,0) node[inner sep=2mm,fill=cream,ultra thick,draw=red,rounded corners=2mm]% 
+\bgroup\begin{minipage}{#1}\raggedright{}}
+{\end{minipage}\egroup;%
+\end{tikzpicture}}