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1.1     ! bowersj2    1: 
        !             2: Variables can be used later in the same script. For instance, we can add
        !             3: another line below the \texttt{\$variable} line as such:
        !             4: 
        !             5: \begin{lyxcode}
        !             6: \$variable2~=~\$variable~+~2;
        !             7: \end{lyxcode}
        !             8: 
        !             9: Now there is a variable called \texttt{\$variable2} with the the number {}``5''
        !            10: as its value. 
        !            11: 
        !            12: Variables can also be used in \emph{strings}\index{strings}, which are a
        !            13: sequence of letters. The underlying language of the script, Perl, has a very
        !            14: large number of ways of using variables in strings, but the easiest and most
        !            15: common way is to use normal double-quotes and just spell out the name of
        !            16: the variable you want to use in the string, like this:
        !            17: 
        !            18: \begin{lyxcode}
        !            19: \$stringVar~=~{}``I~have~a~variable~with~the~value~\$variable.''
        !            20: \end{lyxcode}
        !            21: 
        !            22: This will put the string {}``I have a variable with the value 3.'' into
        !            23: the variable named {}``stringVar''.