git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@1648 f3b2605a-c512-4ea7-a41b-209d697bcdaa

doc/fix_langevin.html

@@ -67,6 +67,14 @@ used to randomize the direction and magnitude of this force as
 described in <A HREF = "#Dunweg">(Dunweg)</A>, where a uniform random number is used
 (instead of a Gaussian random number) for speed.
 </P>
+<P>Note that the thermostat effect of this fix is applied to only the
+translational degrees of freedom for the particles, which is an
+important consideration if extended spherical or aspherical particles
+which have rotational degrees of freedom are being thermostatted with
+this fix.  The translational degrees of freedom can also have a bias
+velocity removed from them before thermostatting takes place; see the
+description below.
+</P>
 <P>IMPORTANT NOTE: Unlike the <A HREF = "fix_nvt.html">fix nvt</A> command which
 performs Nose/Hoover thermostatting AND time integration, this fix
 does NOT perform time integration.  It only modifies forces to effect
@@ -111,10 +119,6 @@ generate its own unique seed and its own stream of random numbers.
 Thus the dynamics of the system will not be identical on two runs on
 different numbers of processors.
 </P>
-<P>The keyword <I>axes</I> can be used to specify which dimensions to add Ff
-and Fr to.  A flag of 0 means skip that dimension; a flag of 1 means
-include that dimension.  The default is 1 for all 3 dimensions.
-</P>
 <P>The keyword <I>scale</I> allows the damp factor to be scaled up or down by
 the specified factor for atoms of that type.  This can be useful when
 different atom types have different sizes or masses.  It can be used
@@ -158,7 +162,7 @@ fix for access by various <A HREF = "Section_howto.html#4_15">output commands</A
 <P><B>Related commands:</B>
 </P>
 <P><A HREF = "fix_nvt.html">fix nvt</A>, <A HREF = "fix_temp_rescale.html">fix temp/rescale</A>, <A HREF = "fix_viscous.html">fix
-viscous</A>
+viscous</A>, <A HREF = "fix_nvt.html">fix nvt</A>
 </P>
 <P><B>Default:</B>
 </P>