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Initialized empty Git repository in ~/thesis/.git/  \end{lstlisting}  Now you are ready to start tracking your code (\label{fig:Fig1}). (\ref{fig:Fig1}).  Conceptually, Git saves snapshots of the changes you make to your files whenever you instruct it to.  For instance, after you edit a script in your text editor, you save the updated script to your thesis folder.  If you tell Git to save a shapshot of the updated document, then you will have a permanent record of the file in that exact version even if you make subsequent edits to the file.