-\usage
-\ctsimtext\ can be executed without any parameters. In that case, \ctsimtext\
-offers a command-line to enter the function-names and their parameters. The output of the command is displayed. Further commands may be given to \ctsimtext. The shell is exited by the {\tt quit} command.
-
-\ctsimtext\ can also be called to execute a single command. This is especially useful for batch files containing multiple \ctsimtext\ commands. This is invoked by calling \par
-{\tt ctsimtext function-name parameters...}.
+\usage \ctsimtext\ can be invoked via three different
+methods.
+\begin{itemize}\itemsep=0pt
+\item \ctsimtext\ can executed without any parameters. In that case,
+\ctsimtext\ offers a command-line to enter the function-names and
+their parameters. The output of the command is displayed. Further
+commands may be given to \ctsimtext. The shell is exited by the
+\texttt{quit} command.
+
+\item \ctsimtext\ can also be called to
+execute a single command. This is especially useful for batch
+files containing multiple \ctsimtext\ commands. This is invoked by
+calling\\ \texttt{ctsimtext function-name parameters...}.
+
+\item Using operating systems that support soft or hard linking of
+files (such as UNIX and Linux), the executable file \ctsimtext\ can
+be linked to the function names. This is automatically done by
+the installation file for Linux. Thus, to use \ctsimtext\ with the
+function name \texttt{pjrec}, the below command can be executed:\\
+\texttt{pjrec parameters...}