ropriate error messages are displayed
and the program exits. Obviously, you must design your alternate
syntaxes to be mutually exclusive, otherwise your program syntax will
be ambiguous. Mutual exclusion is achieved in this case by the use of
keywords (insert, remove, search) in the command line which uniquely
identify each syntax.</P>
<P STYLE="margin-top: 0.25cm; margin-bottom: 0.51cm">Looking at the
code, we see that each syntax is defined by its own argument table as
follows:</P>
<PRE CLASS="western">/*