If <tt>continue_curstep</tt> = 1, then at the beginning of MD simulation by command
<tt>run</tt>, the variable <tt>curstep</tt> will not be reset to zero.  Instead, it will keep 
its current value and the simulation will continue for another <tt>totalsteps</tt> number of
steps.  In this case, the <tt>curstep</tt> entry in the property file will be monotonically
increasing, when the command <tt>run</tt> is called several times in the input (script or tcl) 
file.
