diff --git a/doc/src/pair_body_nparticle.rst b/doc/src/pair_body_nparticle.rst
index 1214890070..edfd4f3ab2 100644
--- a/doc/src/pair_body_nparticle.rst
+++ b/doc/src/pair_body_nparticle.rst
@@ -1,13 +1,13 @@
-.. index:: pair\_style body/nparticle
+.. index:: pair_style body/nparticle
 
-pair\_style body/nparticle command
-==================================
+pair_style body/nparticle command
+=================================
 
 Syntax
 """"""
 
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    pair_style body/nparticle cutoff
 
@@ -17,10 +17,10 @@ Examples
 """"""""
 
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    pair_style body/nparticle 3.0
-   pair_coeff \* \* 1.0 1.0
+   pair_coeff * * 1.0 1.0
    pair_coeff 1 1 1.0 1.5 2.5
 
 Description
@@ -67,11 +67,15 @@ The interaction between two sub-particles, or a sub-particle and point
 particle, or between two point particles is computed as a Lennard-Jones
 interaction, using the standard formula
 
-.. image:: Eqs/pair_lj.jpg
-   :align: center
+.. math::
 
-where Rc is the cutoff.  As explained above, an interaction involving
-one or two body sub-particles may be computed even for r > Rc.
+   E & = 4 \epsilon \left[ \left(\frac{\sigma}{r}\right)^{12} -
+                       \left(\frac{\sigma}{r}\right)^6 \right]
+                       \qquad r < R_c \\
+
+
+where :math:`R_c` is the cutoff.  As explained above, an interaction involving
+one or two body sub-particles may be computed even for :math:`r > R_c`.
 
 For style *body*\ , the following coefficients must be defined for each
 pair of atoms types via the :doc:`pair_coeff <pair_coeff>` command as in
@@ -79,8 +83,8 @@ the examples above, or in the data file or restart files read by the
 :doc:`read_data <read_data>` or :doc:`read_restart <read_restart>`
 commands:
 
-* epsilon (energy units)
-* sigma (distance units)
+* :math:`\epsilon` (energy units)
+* :math:`\sigma` (distance units)
 * cutoff (distance units)
 
 The last coefficient is optional.  If not specified, the global cutoff
@@ -94,7 +98,7 @@ is used.
 
 For atom type pairs I,J and I != J, the epsilon and sigma coefficients
 and cutoff distance for all of this pair style can be mixed.  The
-default mix value is *geometric*\ .  See the "pair\_modify" command for
+default mix value is *geometric*\ .  See the :doc:`pair_modify <pair_modify>` command for
 details.
 
 This pair style does not support the :doc:`pair_modify <pair_modify>`