Usage: <tt>input = [ <i>dir  s0 s1 ds </i>] cutpastecn</tt>

<p>
Replace all atoms whose <tt><i>dir</i></tt>-th scaled coordinates falls within <tt>[<i>s0,s1</i>]</tt>
to those given in the <tt>incnfile</tt>, and then displace these atoms by <tt><i>ds</i></tt>
in the <tt><i>dir</i></tt>-th direction.  (<tt><i>dir</i> = 1, 2, 3</tt> for x, y, z.)

