99724456">dihedral coeff</A>         1 2.0 5 180.0 0.5         (dihedral style charmm)
<A HREF="#_cch3_999724473">improper coeff</A>         1 20.0 0.0                (improper style harmonic)
<A HREF="#_cch3_999724473">improper coeff</A>         1 20.0 10.0               (improper style cvff)
</PRE>
<HR>
<H3>
<A NAME="_cch3_930960516">Constraints</A></H3>
<P>
(if used, must appear after &quot;read data&quot; or &quot;read 
restart&quot; command)</P>
<PRE>
<A HREF="#_cch3_931277114">fix style</A>           