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|      1 \documentclass{article} |      1 \documentclass{article} | 
|      2 \usepackage{../style} |      2 \usepackage{../style} | 
|      3 \usepackage{../graphicss} |      3 \usepackage{../graphicss} | 
|      4  |      4  | 
|      5  |         | 
|      6 \newcommand{\solution}[1]{% |         | 
|      7   \begin{quote}\sf% |         | 
|      8     #1% |         | 
|      9   \end{quote}} |         | 
|     10 \renewcommand{\solution}[1]{} |         | 
|     11  |         | 
|     12  |         | 
|     13 \begin{document} |      5 \begin{document} | 
|     14  |      6  | 
|     15 \section*{Homework 2} |      7 \section*{Homework 2} | 
|     16  |      8  | 
|     17 \HEADER |      9 %\HEADER | 
|     18  |     10  | 
|     19 \begin{enumerate} |     11 \begin{enumerate} | 
|     20 \item What is the difference between \emph{basic} regular expressions   |     12 \item What is the difference between \emph{basic} regular expressions   | 
|     21   and \emph{extended} regular expressions? |     13   and \emph{extended} regular expressions? | 
|     22  |     14  |