\section{Introduction}

\sic\ (*) is a command line interpretor, written in FORTRAN and callable as
a subroutine by any program.  It provides a command language with the following major features:
\begin{itemize}
\item resolution of command abbreviations
\item definition of symbols
\item procedures with arguments substitution during execution
\item log file
\item multi-language structure
\item loop buffers for repetitive actions
\item variables, arithmetic and logical expressions evaluation
\item structured logical tests
\item error recovery
\item stack buffer
\item keypad editing of command lines
\item Graphic User Interface (widgets) using simple scripts
\end{itemize}

This manual contains several chapters. Chapter 2 (The SIC monitor) should
be read by every user before using \sic.  Chapter 3 contains a copy of the
internal help files of \sic.
% Chapter 4 is a programming manual for the user who would like to use \sic\ to create its own application.
Chapter 4 is a list of all possible \sic\ error messages and of their most usual
recovery procedures. This reference may be useful if you encounter an error
message which you do not understand while running \sic.

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