diff --git a/doc/src/compute_viscosity_cos.rst b/doc/src/compute_viscosity_cos.rst
index 033a7f0956..7c0d130a7a 100644
--- a/doc/src/compute_viscosity_cos.rst
+++ b/doc/src/compute_viscosity_cos.rst
@@ -19,7 +19,7 @@ Examples
 """"""""
 
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute  cos all viscosity/cos
    variable V equal c_cos[7]
@@ -39,7 +39,7 @@ e.g. :doc:`thermo_modify <thermo_modify>`, :doc:`fix npt <fix_nh>`, etc.
 
 This command together with :doc:`fix_accelerate/cos<fix_accelerate_cos>`
 enables viscosity calculation with periodic perturbation method,
-as described by :ref:`Hess<Hess>`.
+as described by :ref:`Hess<Hess1>`.
 An acceleration along the x-direction is applied to the simulation system
 by using :doc:`fix_accelerate/cos<fix_accelerate_cos>` command.
 The acceleration is a periodic function along the z-direction:
@@ -112,10 +112,8 @@ See the :doc:`Howto thermostat <Howto_thermostat>` doc page for a
 discussion of different ways to compute temperature and perform
 thermostatting.
 
-
 ----------
 
-
 **Output info:**
 
 This compute calculates a global scalar (the temperature) and a global
@@ -149,9 +147,8 @@ Default
 """""""
  none
 
-
 ----------
 
-.. _Hess:
+.. _Hess1:
 
-**(Hess)** Hess, B. The Journal of Chemical Physics 2002, 116 (1), 209–217.
+**(Hess)** Hess, B. The Journal of Chemical Physics 2002, 116 (1), 209-217.
diff --git a/doc/src/fix_accelerate_cos.rst b/doc/src/fix_accelerate_cos.rst
index 60281d4acd..e1047dd455 100644
--- a/doc/src/fix_accelerate_cos.rst
+++ b/doc/src/fix_accelerate_cos.rst
@@ -20,14 +20,14 @@ Examples
 """"""""
 
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
-   fix 1 all accelerate/cos 0.02E-5
+   fix 1 all accelerate/cos 0.02e-5
 
 Description
 """""""""""
 
-Give each atom a acceleration in x-direciton based on its z coordinate.
+Give each atom a acceleration in x-direction based on its z coordinate.
 The acceleration is a periodic function along the z-direction:
 
 .. math::
@@ -61,7 +61,7 @@ x-component velocity and z coordinate of a particle.
 
 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<Hess>`.
+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.
@@ -72,11 +72,9 @@ the simulation time must be extended accordingly to get converged result.
 
 In order to get meaningful result, the group ID of this fix should be all.
 
-
 ----------
 
-
-**Restart, fix\_modify, output, run start/stop, minimize info:**
+**Restart, fix_modify, output, run start/stop, minimize info:**
 
 No information about this fix is written to binary restart files.
 None of the fix_modify options are relevant to this fix.
@@ -98,9 +96,8 @@ Default
 """""""
  none
 
-
 ----------
 
-.. _Hess:
+.. _Hess2:
 
-**(Hess)** Hess, B. The Journal of Chemical Physics 2002, 116 (1), 209–217.
+**(Hess)** Hess, B. The Journal of Chemical Physics 2002, 116 (1), 209-217.