small doc fixes

doc/src/compute_viscosity_cos.rst

@@ -96,7 +96,7 @@ ordered :math:`xx`, :math:`yy`, :math:`zz`, :math:`xy`, :math:`xz`, :math:`yz`.
 The number of atoms contributing to the temperature is assumed to be
 constant for the duration of the run; use the *dynamic* option of the
 :doc:`compute_modify <compute_modify>` command if this is not the case.
-However, in order to get meaningful result, the group ID of this compute should
+However, in order to get meaningful results, the group ID of this compute should
 be all.
 
 The removal of the cosine-shaped velocity component by this command is
@@ -145,7 +145,10 @@ The seventh element of vector value will be in velocity :doc:`units <units>`.
 Restrictions
 """"""""""""
 
-This command is only available when LAMMPS was built with the MISC package.
+This compute is part of the MISC package.  It is only enabled if LAMMPS
+was built with that package.  See the :doc:`Build package
+<Build_package>` page for more info.
+
 Since this compute depends on :doc:`fix accelerate/cos <fix_accelerate_cos>`
 which can only work for 3d systems, it cannot be used for 2d systems.
 

doc/src/fix_accelerate_cos.rst

@@ -20,7 +20,7 @@ Examples
 
 .. code-block:: LAMMPS
 
-   fix 1 all accelerate/cos 0.02e-5
+   fix 1 all accelerate/cos 2.0e-7
 
 Description
 """""""""""
@@ -57,19 +57,18 @@ where :math:`m_i`, :math:`v_{i,x}`, and :math:`z_i` are the mass,
 :math:`x`-component velocity, and :math:`z`-coordinate of a particle,
 respectively.
 
-The velocity amplitude :math:`V` can be calculated with
-:doc:`compute viscosity/cos <compute_viscosity_cos>`,
-which enables viscosity calculation with periodic perturbation method,
-as described by :ref:`Hess<Hess2>`.
-Because the applied acceleration drives the system away from equilibration,
-the calculated shear viscosity is lower than the intrinsic viscosity
-due to the shear-thinning effect.
-Extrapolation to zero acceleration should generally be performed to
-predict the zero-shear viscosity.
-As the shear stress decreases, the signal-noise ratio decreases rapidly,
-the simulation time must be extended accordingly to get converged result.
+The velocity amplitude :math:`V` can be calculated with :doc:`compute
+viscosity/cos <compute_viscosity_cos>`, which enables viscosity
+calculation with periodic perturbation method, as described by
+:ref:`Hess<Hess2>`.  Because the applied acceleration drives the system
+away from equilibration, the calculated shear viscosity is lower than
+the intrinsic viscosity due to the shear-thinning effect.  Extrapolation
+to zero acceleration should generally be performed to predict the
+zero-shear viscosity.  As the shear stress decreases, the
+signal-to-noise ratio decreases rapidly, and the simulation time must be
+extended accordingly to get converged results.
 
-In order to get meaningful result, the group ID of this fix should be all.
+In order to get meaningful results, the group ID of this fix should be all.
 
 ----------
 
@@ -81,12 +80,16 @@ None of the fix_modify options are relevant to this fix.
 No global or per-atom quantities are stored by this fix for access by various
 output commands.  No parameter of this fix can be used with the start/stop
 keywords of the run command.
+
 This fix is not invoked during energy minimization.
 
 Restrictions
 """"""""""""
 
-This command is only available when LAMMPS was built with the MISC package.
+This fix is part of the MISC package.  It is only enabled if LAMMPS was
+built with that package.  See the :doc:`Build package <Build_package>`
+page for more info.
+
 Since this fix depends on the :math:`z`-coordinate of atoms, it cannot be used
 in 2d simulations.
 

doc/src/fix_ave_spatial.rst

@@ -1,4 +1,4 @@
-Fix ave/spatial command
+fix ave/spatial command
 =======================
 
 .. meta::

doc/src/fix_ave_spatial_sphere.rst

@@ -1,5 +1,5 @@
-Fix ave/spatial command
-=======================
+fix ave/spatial/sphere command
+==============================
 
 .. meta::
    :http-equiv=Refresh: 5; url=https://docs.lammps.org/Commands_removed.html#fix-ave-spatial-and-fix-ave-spatial-sphere