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\section{INTRODUCTION}
\label{sec:introduction}

Many Internet service providers and online services require you to
manually enter information, such as your user name and password,
to establish a connection. With Scripting support for Dial-Up
Networking, you can write a script to automate this process. Many
Internet service providers and online services \cite{Smith98}
require you to manually enter information, such as your user name
and password, to establish a connection. With Scripting support
for Dial-Up Networking, you can write a script to automate this
process. Many Internet service providers and online services
\cite{Louis99} require you to manually enter information, such as
your user name and password, to establish a connection. With
Scripting support for Dial-Up Networking, you can write a script
to automate this process.


\section{BASIC STRUCTURE OF A SCRIPT}
\label{sec:basic}

A command is the basic instruction that a script file contains.
Some commands require parameters that further define what the
command should do. An expression is a combination of operators and
arguments that create a result. Expressions can be used as values
in any command.  Examples of expressions include arithmetic,
relational comparisons, and string concatenations. A command is
the basic instruction that a script file contains. Some commands
require parameters that further define what the command should do.
An expression is a combination of operators and arguments that
create a result. Expressions can be used as values in any command.
Examples of expressions include arithmetic, relational
comparisons, and string concatenations.


A command is the basic instruction that a script file contains.
Some commands require parameters that further define what the
command should do. An expression is a combination of operators and
arguments that create a result. Expressions can be used as values
in any command.  Examples of expressions include arithmetic,
relational comparisons, and string concatenations.

The basic form of a script for Dial-Up Networking follows:

\begin{ttfamily}
\begin{small}

 ; A comment begins with a semi-colon\\

 ;and extends to the end of the line.\\

 proc main\\

 ;  A script can have any number of\\

 ; variables and commands\\

    variable declarations\\

    command block\\

 endproc\\

\end{small}
\end{ttfamily}

You must declare variables before you add commands. The first
command in the main procedure is executed, and then any subsequent
commands are executed in the order they appear in the script. The
script ends when the end of the main procedure is reached.


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\section{VARIABLES}
\label{sec:variables}

 Scripts may contain variables. Variable
names must begin with a letter or an underscore, and may contain
any sequence of upper- or lower-case letters, digits, and
underscores. You cannot use a reserved word as a variable name.
For more information, see the list of reserved words at the end of
this document. Variables are assigned values using the following
assignment statement:
\begin{equation}\label{eq:1}
    variable=expression
\end{equation}

The variable gets the evaluated expression.

Examples:

\begin{ttfamily}
\begin{small}
 integer count = 5 \\

 integer timeout = (4 * 3)\\

integer i\\

boolean bDone = FALSE\\

string szIP = (getip 2)\\

set ipaddr szIP\\
\end{small}
\end{ttfamily}


\subsection{System Variables}
\label{sec:systemvariables}

System variables are set by scripting commands or are determined
by the information your enter when you set up a Dial-Up Networking
connection.

 System variables are read-only, which means they
cannot be changed within the script.


\section{CONCLUSION}
\label{sec:conclusion}

All the conclusions and future work in here.

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