faces, such as UNIX systems, the <code class="literal">shmget(2)</code>
            and related System V IPC interfaces are used. 
        
            <span> 

                Additionally, VxWorks systems use system memory. In these cases,
                an initial segment ID must be specified by the application to
                ensure that applications do not overwrite each other's
                environments, so that the number of segments created does not
                grow without bounds.  See t