deletions | additions       diff --git a/header.tex b/header.tex  index 44df7e9..28cc275 100644  --- a/header.tex  +++ b/header.tex 
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\usepackage[table,dvipsnames]{xcolor}  \usepackage{xspace}  \usepackage{listings}  \usepackage{pifont}  \lstset{ %  backgroundcolor=\color{white}, % choose the background color  basicstyle=\footnotesize, % size of fonts used for the code