lt = 5
</PRE>
<HR>
<H3>
<A NAME="_cch3_931276784">press control </A></H3>
<UL>
    <LI>
    1st parameter = style of pressure control 
    <LI>
    2nd parameter = pressure coupling 
    <LI>
    3rd-9th parameters = coeffs 1 to 7 
</UL>
<PRE>
styles:
</PRE>
<UL>
    <LI>
    none = no control (constant volume) 
    <LI>
    nose/hoover = Nose-Hoover constant P 
</UL>
<PRE>
coupling:
</PRE>
<UL>
    <LI>
    xyz = couple all 3 dimensions together (isotropic) 
    <LI>
    xy or yz or xz = couple 2 dimension