diff --git a/doc/src/fix_bond_break.rst b/doc/src/fix_bond_break.rst
index 6951cfc806..c4488574dc 100644
--- a/doc/src/fix_bond_break.rst
+++ b/doc/src/fix_bond_break.rst
@@ -27,7 +27,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 5 all bond/break 10 2 1.2
    fix 5 polymer bond/break 1 1 2.0 prob 0.5 49829
diff --git a/doc/src/fix_bond_create.rst b/doc/src/fix_bond_create.rst
index 8f09c638ca..42c94fb9bc 100644
--- a/doc/src/fix_bond_create.rst
+++ b/doc/src/fix_bond_create.rst
@@ -40,7 +40,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 5 all bond/create 10 1 2 0.8 1
    fix 5 all bond/create 1 3 3 0.8 1 prob 0.5 85784 iparam 2 3
diff --git a/doc/src/fix_bond_react.rst b/doc/src/fix_bond_react.rst
index 7f69f1bda7..3d9101d20b 100644
--- a/doc/src/fix_bond_react.rst
+++ b/doc/src/fix_bond_react.rst
@@ -59,7 +59,7 @@ Examples
 
 For unabridged example scripts and files, see examples/USER/reaction.
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    molecule mol1 pre_reacted_topology.txt
    molecule mol2 post_reacted_topology.txt
@@ -466,7 +466,7 @@ atoms currently involved in a reaction. For example, adding the
 following command would add an additional thermostat to the group of
 all currently-reacting atoms:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 bond_react_MASTER_group temp/rescale 1 300 300 10 1
 
diff --git a/doc/src/fix_bond_swap.rst b/doc/src/fix_bond_swap.rst
index b593c8de1f..773bceb6e7 100644
--- a/doc/src/fix_bond_swap.rst
+++ b/doc/src/fix_bond_swap.rst
@@ -20,7 +20,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all bond/swap 50 0.5 1.3 598934
 
@@ -119,7 +119,7 @@ This fix computes a temperature each time it is invoked for use by the
 Boltzmann criterion.  To do this, the fix creates its own compute of
 style *temp*\ , as if this command had been issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp all temp
 
diff --git a/doc/src/fix_box_relax.rst b/doc/src/fix_box_relax.rst
index a90b301e4b..b7e5c5bb4c 100644
--- a/doc/src/fix_box_relax.rst
+++ b/doc/src/fix_box_relax.rst
@@ -32,7 +32,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all box/relax iso 0.0 vmax 0.001
    fix 2 water box/relax aniso 0.0 dilate partial
@@ -286,7 +286,7 @@ pressure, even though this is subsequently ignored by default.  To do
 this, the fix creates its own computes of style "temp" and "pressure",
 as if these commands had been issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp group-ID temp
    compute fix-ID_press group-ID pressure fix-ID_temp virial
@@ -343,7 +343,7 @@ result in double-counting of the fix energy in the minimization
 energy. Instead, the fix energy can be explicitly added to the
 potential energy using one of these two variants:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    variable emin equal pe+f_1
 
diff --git a/doc/src/fix_client_md.rst b/doc/src/fix_client_md.rst
index 93b489023e..2e7f04f01c 100644
--- a/doc/src/fix_client_md.rst
+++ b/doc/src/fix_client_md.rst
@@ -16,7 +16,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all client/md
 
diff --git a/doc/src/fix_cmap.rst b/doc/src/fix_cmap.rst
index f2b26ba73a..b2ce4d79ad 100644
--- a/doc/src/fix_cmap.rst
+++ b/doc/src/fix_cmap.rst
@@ -17,7 +17,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix            myCMAP all cmap ../potentials/cmap36.data
    read_data      proteinX.data fix myCMAP crossterm CMAP
diff --git a/doc/src/fix_colvars.rst b/doc/src/fix_colvars.rst
index 9b415127f1..af778b2207 100644
--- a/doc/src/fix_colvars.rst
+++ b/doc/src/fix_colvars.rst
@@ -27,7 +27,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix mtd all colvars peptide.colvars.inp seed 2122 input peptide.colvars.state output peptide
    fix abf all colvars colvars.inp tstat 1
diff --git a/doc/src/fix_controller.rst b/doc/src/fix_controller.rst
index 1c58516a8a..3d14bdee08 100644
--- a/doc/src/fix_controller.rst
+++ b/doc/src/fix_controller.rst
@@ -33,7 +33,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all controller 100 1.0 0.5 0.0 0.0 c_thermo_temp 1.5 tcontrol
    fix 1 all controller 100 0.2 0.5 0 100.0 v_pxxwall 1.01325 xwall
diff --git a/doc/src/fix_deform.rst b/doc/src/fix_deform.rst
index 70e6140714..7001b2304e 100644
--- a/doc/src/fix_deform.rst
+++ b/doc/src/fix_deform.rst
@@ -81,7 +81,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all deform 1 x final 0.0 9.0 z final 0.0 5.0 units box
    fix 1 all deform 1 x trate 0.1 y volume z volume
@@ -280,12 +280,12 @@ Here is an example of using the *variable* style to perform the same
 box deformation as the *wiggle* style formula listed above, where we
 assume that the current timestep = 0.
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    variable A equal 5.0
    variable Tp equal 10.0
-   variable displace equal "v_A \* sin(2\*PI \* step\*dt/v_Tp)"
-   variable rate equal "2\*PI\*v_A/v_Tp \* cos(2\*PI \* step\*dt/v_Tp)"
+   variable displace equal "v_A * sin(2*PI * step*dt/v_Tp)"
+   variable rate equal "2*PI*v_A/v_Tp * cos(2*PI * step*dt/v_Tp)"
    fix 2 all deform 1 x variable v_displace v_rate remap v
 
 For the *scale*\ , *vel*\ , *erate*\ , *trate*\ , *volume*\ , *wiggle*\ , and
@@ -425,12 +425,12 @@ Here is an example of using the *variable* style to perform the same
 box deformation as the *wiggle* style formula listed above, where we
 assume that the current timestep = 0.
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    variable A equal 5.0
    variable Tp equal 10.0
-   variable displace equal "v_A \* sin(2\*PI \* step\*dt/v_Tp)"
-   variable rate equal "2\*PI\*v_A/v_Tp \* cos(2\*PI \* step\*dt/v_Tp)"
+   variable displace equal "v_A * sin(2*PI * step*dt/v_Tp)"
+   variable rate equal "2*PI*v_A/v_Tp * cos(2*PI * step*dt/v_Tp)"
    fix 2 all deform 1 xy variable v_displace v_rate remap v
 
 ----------
diff --git a/doc/src/fix_deposit.rst b/doc/src/fix_deposit.rst
index cf2b59709e..c379dcd9b0 100644
--- a/doc/src/fix_deposit.rst
+++ b/doc/src/fix_deposit.rst
@@ -65,7 +65,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 3 all deposit 1000 2 100 29494 region myblock local 1.0 1.0 1.0 units box
    fix 2 newatoms deposit 10000 1 500 12345 region disk near 2.0 vz -1.0 -0.8
diff --git a/doc/src/fix_dpd_energy.rst b/doc/src/fix_dpd_energy.rst
index 436af3c344..f7dc52fbe6 100644
--- a/doc/src/fix_dpd_energy.rst
+++ b/doc/src/fix_dpd_energy.rst
@@ -19,7 +19,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all dpd/energy
 
diff --git a/doc/src/fix_dpd_source.rst b/doc/src/fix_dpd_source.rst
index a13382728d..8a2cd885ee 100644
--- a/doc/src/fix_dpd_source.rst
+++ b/doc/src/fix_dpd_source.rst
@@ -33,7 +33,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all edpd/source sphere 0.0 0.0 0.0 5.0 0.01
    fix 1 all edpd/source cuboid 0.0 0.0 0.0 20.0 10.0 10.0 -0.01
diff --git a/doc/src/fix_drag.rst b/doc/src/fix_drag.rst
index ed94f0e7fa..74d98d7a40 100644
--- a/doc/src/fix_drag.rst
+++ b/doc/src/fix_drag.rst
@@ -19,7 +19,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix center small-molecule drag 0.0 10.0 0.0 5.0 2.0
 
diff --git a/doc/src/fix_drude.rst b/doc/src/fix_drude.rst
index 73b9921fda..db13d8d052 100644
--- a/doc/src/fix_drude.rst
+++ b/doc/src/fix_drude.rst
@@ -17,7 +17,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all drude 1 1 0 1 0 2 2 2
    fix 1 all drude C C N C N D D D
diff --git a/doc/src/fix_drude_transform.rst b/doc/src/fix_drude_transform.rst
index 10c4bbfc60..7a17ab98cf 100644
--- a/doc/src/fix_drude_transform.rst
+++ b/doc/src/fix_drude_transform.rst
@@ -19,7 +19,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 3 all drude/transform/direct
    fix 1 all drude/transform/inverse
@@ -132,7 +132,7 @@ acting on two distinct groups.
 
 Example:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix fDIRECT all drude/transform/direct
    fix fNVT gCORES nvt temp 300.0 300.0 100
@@ -157,7 +157,7 @@ pressure *thermo\_press*.
 
 Example:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute cTEMP_CORE gCORES temp/com
    fix fDIRECT all drude/transform/direct
@@ -176,7 +176,7 @@ In order to avoid the flying ice cube problem (irreversible transfer
 of linear momentum to the center of mass of the system), you may need
 to add a *fix momentum* command:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix fMOMENTUM all momentum 100 linear 1 1 1
 
diff --git a/doc/src/fix_dt_reset.rst b/doc/src/fix_dt_reset.rst
index cc0de3dfbc..e86d11ac94 100644
--- a/doc/src/fix_dt_reset.rst
+++ b/doc/src/fix_dt_reset.rst
@@ -30,7 +30,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 5 all dt/reset 10 1.0e-5 0.01 0.1
    fix 5 all dt/reset 10 0.01 2.0 0.2 units box
diff --git a/doc/src/fix_efield.rst b/doc/src/fix_efield.rst
index 9f54cd2ad3..9084cbc2d6 100644
--- a/doc/src/fix_efield.rst
+++ b/doc/src/fix_efield.rst
@@ -27,7 +27,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix kick external-field efield 1.0 0.0 0.0
    fix kick external-field efield 0.0 0.0 v_oscillate
diff --git a/doc/src/fix_ehex.rst b/doc/src/fix_ehex.rst
index 86cb42c8cd..96eb94db01 100644
--- a/doc/src/fix_ehex.rst
+++ b/doc/src/fix_ehex.rst
@@ -31,7 +31,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    # Lennard-Jones, from examples/in.ehex.lj
 
diff --git a/doc/src/fix_electron_stopping.rst b/doc/src/fix_electron_stopping.rst
index 459883ea2f..5fea8a3d6d 100644
--- a/doc/src/fix_electron_stopping.rst
+++ b/doc/src/fix_electron_stopping.rst
@@ -27,7 +27,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix el all electron/stopping 10.0 elstop-table.txt
    fix el all electron/stopping 10.0 elstop-table.txt minneigh 3
diff --git a/doc/src/fix_enforce2d.rst b/doc/src/fix_enforce2d.rst
index 3351d59303..f775572720 100644
--- a/doc/src/fix_enforce2d.rst
+++ b/doc/src/fix_enforce2d.rst
@@ -19,7 +19,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 5 all enforce2d
 
diff --git a/doc/src/fix_eos_cv.rst b/doc/src/fix_eos_cv.rst
index 5913d0e887..50281b6e71 100644
--- a/doc/src/fix_eos_cv.rst
+++ b/doc/src/fix_eos_cv.rst
@@ -17,7 +17,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all eos/cv 0.01
 
diff --git a/doc/src/fix_eos_table.rst b/doc/src/fix_eos_table.rst
index e15bcfa882..a21de28b04 100644
--- a/doc/src/fix_eos_table.rst
+++ b/doc/src/fix_eos_table.rst
@@ -20,7 +20,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all eos/table linear eos.table 100000 KEYWORD
 
diff --git a/doc/src/fix_eos_table_rx.rst b/doc/src/fix_eos_table_rx.rst
index b85df50769..e3cd4e8ce8 100644
--- a/doc/src/fix_eos_table_rx.rst
+++ b/doc/src/fix_eos_table_rx.rst
@@ -27,7 +27,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all eos/table/rx linear eos.table 10000 KEYWORD thermo.table
    fix 1 all eos/table/rx linear eos.table 10000 KEYWORD 1.5
diff --git a/doc/src/fix_evaporate.rst b/doc/src/fix_evaporate.rst
index 36469dc5c3..8883940002 100644
--- a/doc/src/fix_evaporate.rst
+++ b/doc/src/fix_evaporate.rst
@@ -26,7 +26,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 solvent evaporate 1000 10 surface 49892
    fix 1 solvent evaporate 1000 10 surface 38277 molecule yes
diff --git a/doc/src/fix_external.rst b/doc/src/fix_external.rst
index 78a60ac93a..01020d27b2 100644
--- a/doc/src/fix_external.rst
+++ b/doc/src/fix_external.rst
@@ -25,7 +25,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all external pf/callback 1 1
    fix 1 all external pf/callback 100 1
@@ -51,23 +51,25 @@ be used multiple times to update atom forces.
 
 The callback function "foo" is invoked by the fix as:
 
-.. parsed-literal::
+.. code-block:: c++
 
-   foo(void \*ptr, bigint timestep, int nlocal, int \*ids, double \*\*x, double \*\*fexternal);
+   foo(void *ptr, bigint timestep, int nlocal, tagint *ids, double **x, double **fexternal);
 
 The arguments are as follows:
 
-* ptr = pointer provided by and simply passed back to external driver
-* timestep = current LAMMPS timestep
-* nlocal = # of atoms on this processor
-* ids = list of atom IDs on this processor
-* x = coordinates of atoms on this processor
-* fexternal = forces to add to atoms on this processor
+* *ptr* = pointer provided by and simply passed back to external driver
+* *timestep* = current LAMMPS timestep
+* *nlocal* = # of atoms on this processor
+* *ids* = list of atom IDs on this processor
+* *x* = coordinates of atoms on this processor
+* *fexternal* = forces to add to atoms on this processor
 
-Note that timestep is a "bigint" which is defined in src/lmptype.h,
-typically as a 64-bit integer.
-
-Fexternal are the forces returned by the driver program.
+Note that *timestep* is a "bigint" which is defined in src/lmptype.h,
+typically as a 64-bit integer. And *ids* is a pointer to type "tagint"
+which is typically a 32-bit integer unless LAMMPS is compiled with
+-DLAMMPS\_BIGBIG. For more info please see the :ref:`build settings
+<size>` section of the manual.  Finally, *fexternal* are the forces
+returned by the driver program.
 
 The fix has a set\_callback() method which the external driver can call
 to pass a pointer to its foo() function.  See the
@@ -87,9 +89,9 @@ every *Napply* steps, similar to the way the :doc:`fix addforce <fix_addforce>`
 The name of the public force array provided by the FixExternal
 class is
 
-.. parsed-literal::
+.. code-block:: c++
 
-   double \*\*fexternal;
+   double **fexternal;
 
 It is allocated by the FixExternal class as an (N,3) array where N is
 the number of atoms owned by a processor.  The 3 corresponds to the
@@ -111,7 +113,7 @@ added forces.  Otherwise the minimization will not converge correctly.
 This can be done from the external driver by calling this public
 method of the FixExternal class:
 
-.. parsed-literal::
+.. code-block:: c++
 
    void set_energy(double eng);
 
diff --git a/doc/src/fix_ffl.rst b/doc/src/fix_ffl.rst
index f6fd3e5c69..837e1c310c 100644
--- a/doc/src/fix_ffl.rst
+++ b/doc/src/fix_ffl.rst
@@ -24,7 +24,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 3 boundary ffl 10 300 300 31415
    fix 1 all ffl 100 500 500 9265 soft
diff --git a/doc/src/fix_filter_corotate.rst b/doc/src/fix_filter_corotate.rst
index 95a5a19042..162b3c244b 100644
--- a/doc/src/fix_filter_corotate.rst
+++ b/doc/src/fix_filter_corotate.rst
@@ -24,7 +24,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    timestep 8
    run_style respa 3 2 8 bond 1 pair 2 kspace 3
diff --git a/doc/src/fix_flow_gauss.rst b/doc/src/fix_flow_gauss.rst
index 1e1b418bdd..9c1b6711e9 100644
--- a/doc/src/fix_flow_gauss.rst
+++ b/doc/src/fix_flow_gauss.rst
@@ -31,7 +31,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix GD fluid flow/gauss 1 0 0
    fix GD fluid flow/gauss 1 1 1 energy yes
diff --git a/doc/src/fix_freeze.rst b/doc/src/fix_freeze.rst
index ef74690c21..cec9064aba 100644
--- a/doc/src/fix_freeze.rst
+++ b/doc/src/fix_freeze.rst
@@ -19,7 +19,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 2 bottom freeze
 
diff --git a/doc/src/fix_gcmc.rst b/doc/src/fix_gcmc.rst
index 04694704d1..01954a3639 100644
--- a/doc/src/fix_gcmc.rst
+++ b/doc/src/fix_gcmc.rst
@@ -56,7 +56,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 2 gas gcmc 10 1000 1000 2 29494 298.0 -0.5 0.01
    fix 3 water gcmc 10 100 100 0 3456543 3.0 -2.5 0.1 mol my_one_water maxangle 180 full_energy
@@ -150,7 +150,7 @@ thermal equilibrium with the simulation cell. Also, it is important
 that the temperature used by fix nvt be dynamic/dof, which can be
 achieved as follows:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute mdtemp mdatoms temp
    compute_modify mdtemp dynamic/dof yes
@@ -357,7 +357,7 @@ therefore, you will want to use the
 current number of atoms is used as a normalizing factor each time
 temperature is computed. A simple example of this is:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute_modify thermo_temp dynamic yes
 
diff --git a/doc/src/fix_gld.rst b/doc/src/fix_gld.rst
index f06c244364..d5e4fd6f4a 100644
--- a/doc/src/fix_gld.rst
+++ b/doc/src/fix_gld.rst
@@ -33,7 +33,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all gld 1.0 1.0 2 82885 pprony 0.5 1.0 1.0 2.0 frozen yes zero yes
    fix 3 rouse gld 7.355 7.355 4 48823 pprony 107.1 0.02415 186.0 0.04294 428.6 0.09661 1714 0.38643
diff --git a/doc/src/fix_gle.rst b/doc/src/fix_gle.rst
index e2f3d130b6..d4eecaf903 100644
--- a/doc/src/fix_gle.rst
+++ b/doc/src/fix_gle.rst
@@ -29,7 +29,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 3 boundary gle 6 300 300 31415 smart.A
    fix 1 all gle 6 300 300 31415 qt-300k.A noneq qt-300k.C
diff --git a/doc/src/fix_gravity.rst b/doc/src/fix_gravity.rst
index f9e9c10c5e..06e9581f56 100644
--- a/doc/src/fix_gravity.rst
+++ b/doc/src/fix_gravity.rst
@@ -38,7 +38,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all gravity 1.0 chute 24.0
    fix 1 all gravity v_increase chute 24.0
diff --git a/doc/src/fix_grem.rst b/doc/src/fix_grem.rst
index cbe13fa634..95a15513d4 100644
--- a/doc/src/fix_grem.rst
+++ b/doc/src/fix_grem.rst
@@ -20,7 +20,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix             fxgREM all grem 400 -0.01 -30000 fxnpt
    thermo_modify   press fxgREM_press
diff --git a/doc/src/fix_halt.rst b/doc/src/fix_halt.rst
index f8a46de8a9..25ec154ffb 100644
--- a/doc/src/fix_halt.rst
+++ b/doc/src/fix_halt.rst
@@ -34,7 +34,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 10 all halt 1 bondmax > 1.5
    fix 10 all print 10 v_myCheck != 0 error soft
@@ -86,7 +86,7 @@ computing some attribute of the current system.  For example, the
 following "bondmax" variable will calculate the same quantity as the
 hstyle = bondmax option.
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute         bdist all bond/local dist
    compute         bmax all reduce max c_bdist
@@ -94,7 +94,7 @@ hstyle = bondmax option.
 
 Thus these two versions of a fix halt command will do the same thing:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 10 all halt 1 bondmax > 1.5
    fix 10 all halt 1 v_bondmax > 1.5
diff --git a/doc/src/fix_heat.rst b/doc/src/fix_heat.rst
index f140c5117d..cf046fe000 100644
--- a/doc/src/fix_heat.rst
+++ b/doc/src/fix_heat.rst
@@ -26,7 +26,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 3 qin heat 1 1.0
    fix 3 qin heat 10 v_flux
diff --git a/doc/src/fix_hyper_global.rst b/doc/src/fix_hyper_global.rst
index eb45cee17e..8ac25ede9b 100644
--- a/doc/src/fix_hyper_global.rst
+++ b/doc/src/fix_hyper_global.rst
@@ -20,7 +20,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all hyper/global 1.0 0.3 0.8 300.0
 
diff --git a/doc/src/fix_hyper_local.rst b/doc/src/fix_hyper_local.rst
index acea82ecd3..5b837ee275 100644
--- a/doc/src/fix_hyper_local.rst
+++ b/doc/src/fix_hyper_local.rst
@@ -34,7 +34,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all hyper/local 1.0 0.3 0.8 300.0
    fix 1 all hyper/local 1.0 0.3 0.8 300.0 bound 0.1 reset 0
@@ -248,7 +248,7 @@ well for many solid-state systems.
    pair\_style cutoff, which will typically be < *Dcut*\ .  The :doc:`comm_modify cutoff <comm_modify>` command should be used to override the ghost
    cutoff explicitly, e.g.
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    comm_modify cutoff 12.0
 
diff --git a/doc/src/fix_imd.rst b/doc/src/fix_imd.rst
index 4423a95872..1db18e515f 100644
--- a/doc/src/fix_imd.rst
+++ b/doc/src/fix_imd.rst
@@ -30,7 +30,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix vmd all imd 5678
    fix comm all imd 8888 trate 5 unwrap on fscale 10.0
diff --git a/doc/src/fix_indent.rst b/doc/src/fix_indent.rst
index 337508dfd2..945b28efdc 100644
--- a/doc/src/fix_indent.rst
+++ b/doc/src/fix_indent.rst
@@ -42,7 +42,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all indent 10.0 sphere 0.0 0.0 15.0 3.0
    fix 1 all indent 10.0 sphere v_x v_y 0.0 v_radius side in
@@ -62,9 +62,9 @@ must set one of those 3 keywords.
 
 A spherical indenter exerts a force of magnitude
 
-.. parsed-literal::
+.. math::
 
-   F(r) = - K (r - R)\^2
+   F(r) = - K \left( r - R \right)^2
 
 on each atom where *K* is the specified force constant, *r* is the
 distance from the atom to the center of the indenter, and *R* is the
@@ -117,27 +117,27 @@ then this variable definition will keep it's center at a relative
 position in the simulation box, 1/4 of the way from the left edge to
 the right edge, even if the box size changes:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
-   variable x equal "xlo + 0.25\*lx"
+   variable x equal "xlo + 0.25*lx"
 
 Similarly, either of these variable definitions will move the indenter
 from an initial position at 2.5 at a constant velocity of 5:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
-   variable x equal "2.5 + 5\*elaplong\*dt"
+   variable x equal "2.5 + 5*elaplong*dt"
    variable x equal vdisplace(2.5,5)
 
 If a spherical indenter's radius is specified as v\_r, then these
 variable definitions will grow the size of the indenter at a specified
 rate.
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    variable r0 equal 0.0
    variable rate equal 1.0
-   variable r equal "v_r0 + step\*dt\*v_rate"
+   variable r equal "v_r0 + step*dt*v_rate"
 
 If the *side* keyword is specified as *out*\ , which is the default,
 then particles outside the indenter are pushed away from its outer
@@ -171,7 +171,7 @@ lattice spacing, you can define K with a variable whose formula
 contains *xlat*\ , *ylat*\ , *zlat* keywords of the
 :doc:`thermo_style <thermo_style>` command, e.g.
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    variable k equal 100.0/xlat/xlat
    fix 1 all indent $k sphere ...
diff --git a/doc/src/fix_ipi.rst b/doc/src/fix_ipi.rst
index f041bdea94..58049bc4ac 100644
--- a/doc/src/fix_ipi.rst
+++ b/doc/src/fix_ipi.rst
@@ -20,8 +20,10 @@ Syntax
 Examples
 """"""""
 
-fix 1 all ipi my.server.com 12345
-fix 1 all ipi mysocket 666 unix reset
+.. code-block:: LAMMPS
+
+   fix 1 all ipi my.server.com 12345
+   fix 1 all ipi mysocket 666 unix reset
 
 Description
 """""""""""
diff --git a/doc/src/fix_langevin_drude.rst b/doc/src/fix_langevin_drude.rst
index 0cc2a7e898..bcfc4878a4 100644
--- a/doc/src/fix_langevin_drude.rst
+++ b/doc/src/fix_langevin_drude.rst
@@ -30,7 +30,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 3 all langevin/drude 300.0 100.0 19377 1.0 20.0 83451
    fix 1 all langevin/drude 298.15 100.0 19377 5.0 10.0 83451 zero yes
@@ -145,7 +145,7 @@ specify the Drude status of each atom type.
    correctly.  You must use the :doc:`comm_modify <comm_modify>` command to
    enable this, e.g.
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    comm_modify vel yes
 
@@ -220,7 +220,7 @@ command.
 
 Usage example for rigid bodies in the NPT ensemble:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    comm_modify vel yes
    fix TEMP all langevin/drude 300. 100. 1256 1. 20. 13977 zero yes
diff --git a/doc/src/fix_latte.rst b/doc/src/fix_latte.rst
index 2482e994af..beeec5a014 100644
--- a/doc/src/fix_latte.rst
+++ b/doc/src/fix_latte.rst
@@ -17,7 +17,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix dftb all latte NULL
 
diff --git a/doc/src/fix_lb_fluid.rst b/doc/src/fix_lb_fluid.rst
index d9f783e6a4..53fb0219d7 100644
--- a/doc/src/fix_lb_fluid.rst
+++ b/doc/src/fix_lb_fluid.rst
@@ -50,7 +50,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all lb/fluid 1 2 1.0 1.0 setGamma 13.0 dx 4.0 dm 10.0 calcforce sphere1
    fix 1 all lb/fluid 1 1 1.0 0.0009982071 setArea 1 1.144592082 dx 2.0 dm 0.3 trilinear noise 300.0 8979873
diff --git a/doc/src/fix_lb_momentum.rst b/doc/src/fix_lb_momentum.rst
index 7e2d1d70d8..8a3ff8fcdf 100644
--- a/doc/src/fix_lb_momentum.rst
+++ b/doc/src/fix_lb_momentum.rst
@@ -24,7 +24,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 sphere lb/momentum
    fix 1 all lb/momentum linear 1 1 0
diff --git a/doc/src/fix_lb_pc.rst b/doc/src/fix_lb_pc.rst
index cacc11810b..a7a3ddbccc 100644
--- a/doc/src/fix_lb_pc.rst
+++ b/doc/src/fix_lb_pc.rst
@@ -16,7 +16,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all lb/pc
 
diff --git a/doc/src/fix_lb_rigid_pc_sphere.rst b/doc/src/fix_lb_rigid_pc_sphere.rst
index 9f4beca41a..9edebde0cc 100644
--- a/doc/src/fix_lb_rigid_pc_sphere.rst
+++ b/doc/src/fix_lb_rigid_pc_sphere.rst
@@ -38,7 +38,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 spheres lb/rigid/pc/sphere
    fix 1 all lb/rigid/pc/sphere force 1 0 0 innerNodes ForceAtoms
diff --git a/doc/src/fix_lb_viscous.rst b/doc/src/fix_lb_viscous.rst
index 2cd489d8f6..9b1402af7a 100644
--- a/doc/src/fix_lb_viscous.rst
+++ b/doc/src/fix_lb_viscous.rst
@@ -16,7 +16,9 @@ Syntax
 Examples
 """"""""
 
-fix 1 flow lb/viscous
+.. code-block:: LAMMPS
+
+   fix 1 flow lb/viscous
 
 Description
 """""""""""
diff --git a/doc/src/fix_lineforce.rst b/doc/src/fix_lineforce.rst
index 748373da93..e15286cbde 100644
--- a/doc/src/fix_lineforce.rst
+++ b/doc/src/fix_lineforce.rst
@@ -17,7 +17,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix hold boundary lineforce 0.0 1.0 1.0
 
diff --git a/doc/src/fix_manifoldforce.rst b/doc/src/fix_manifoldforce.rst
index 0f6deeb0fa..2847e26387 100644
--- a/doc/src/fix_manifoldforce.rst
+++ b/doc/src/fix_manifoldforce.rst
@@ -17,7 +17,9 @@ Syntax
 Examples
 """"""""
 
-fix constrain all manifoldforce sphere 5.0
+.. code-block:: LAMMPS
+
+   fix constrain all manifoldforce sphere 5.0
 
 Description
 """""""""""
diff --git a/doc/src/fix_meso.rst b/doc/src/fix_meso.rst
index f838fe9b5d..631061244b 100644
--- a/doc/src/fix_meso.rst
+++ b/doc/src/fix_meso.rst
@@ -16,7 +16,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all meso
 
diff --git a/doc/src/fix_meso_move.rst b/doc/src/fix_meso_move.rst
index 47a5dbd0e8..a1be27abfe 100644
--- a/doc/src/fix_meso_move.rst
+++ b/doc/src/fix_meso_move.rst
@@ -39,7 +39,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 boundary meso/move wiggle 3.0 0.0 0.0 1.0 units box
    fix 2 boundary meso/move rotate 0.0 0.0 0.0 0.0 0.0 1.0 5.0
@@ -107,7 +107,7 @@ Note that the *linear* style is identical to using the *variable*
 style with an :doc:`equal-style variable <variable>` that uses the
 vdisplace() function.  E.g.
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    variable V equal 10.0
    variable x equal vdisplace(0.0,$V)
@@ -135,13 +135,13 @@ Note that the *wiggle* style is identical to using the *variable*
 style with :doc:`equal-style variables <variable>` that use the
 swiggle() and cwiggle() functions.  E.g.
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    variable A equal 10.0
    variable T equal 5.0
-   variable omega equal 2.0\*PI/$T
+   variable omega equal 2.0*PI/$T
    variable x equal swiggle(0.0,$A,$T)
-   variable v equal v_omega\*($A-cwiggle(0.0,$A,$T))
+   variable v equal v_omega*($A-cwiggle(0.0,$A,$T))
    fix 1 boundary move variable v_x NULL NULL v_v NULL NULL
 
 The *rotate* style rotates particles around a rotation axis *R* =
diff --git a/doc/src/fix_meso_stationary.rst b/doc/src/fix_meso_stationary.rst
index 2ae11725fc..4c6b35245c 100644
--- a/doc/src/fix_meso_stationary.rst
+++ b/doc/src/fix_meso_stationary.rst
@@ -16,7 +16,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 boundary meso/stationary
 
diff --git a/doc/src/fix_momentum.rst b/doc/src/fix_momentum.rst
index 0a28aa0c26..6412ba8835 100644
--- a/doc/src/fix_momentum.rst
+++ b/doc/src/fix_momentum.rst
@@ -32,7 +32,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all momentum 1 linear 1 1 0
    fix 1 all momentum 1 linear 1 1 1 rescale
diff --git a/doc/src/fix_move.rst b/doc/src/fix_move.rst
index 34e74e2688..e5aab1259f 100644
--- a/doc/src/fix_move.rst
+++ b/doc/src/fix_move.rst
@@ -39,7 +39,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 boundary move wiggle 3.0 0.0 0.0 1.0 units box
    fix 2 boundary move rotate 0.0 0.0 0.0 0.0 0.0 1.0 5.0
@@ -102,7 +102,7 @@ Note that the *linear* style is identical to using the *variable*
 style with an :doc:`equal-style variable <variable>` that uses the
 vdisplace() function.  E.g.
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    variable V equal 10.0
    variable x equal vdisplace(0.0,$V)
@@ -130,13 +130,13 @@ Note that the *wiggle* style is identical to using the *variable*
 style with :doc:`equal-style variables <variable>` that use the
 swiggle() and cwiggle() functions.  E.g.
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    variable A equal 10.0
    variable T equal 5.0
-   variable omega equal 2.0\*PI/$T
+   variable omega equal 2.0*PI/$T
    variable x equal swiggle(0.0,$A,$T)
-   variable v equal v_omega\*($A-cwiggle(0.0,$A,$T))
+   variable v equal v_omega*($A-cwiggle(0.0,$A,$T))
    fix 1 boundary move variable v_x NULL NULL v_v NULL NULL
 
 The *rotate* style rotates atoms around a rotation axis *R* =
diff --git a/doc/src/fix_mscg.rst b/doc/src/fix_mscg.rst
index 7f9f3fd046..81a59ad7ee 100644
--- a/doc/src/fix_mscg.rst
+++ b/doc/src/fix_mscg.rst
@@ -29,7 +29,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all mscg 1
    fix 1 all mscg 1 range name A B
diff --git a/doc/src/fix_mvv_dpd.rst b/doc/src/fix_mvv_dpd.rst
index 3fb2fdd3d3..bdae316a13 100644
--- a/doc/src/fix_mvv_dpd.rst
+++ b/doc/src/fix_mvv_dpd.rst
@@ -27,7 +27,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all mvv/dpd
    fix 1 all mvv/dpd 0.5
diff --git a/doc/src/fix_neb.rst b/doc/src/fix_neb.rst
index 97deca7688..308f8891c4 100644
--- a/doc/src/fix_neb.rst
+++ b/doc/src/fix_neb.rst
@@ -34,7 +34,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 active neb 10.0
    fix 2 all neb 1.0 perp 1.0 end last
diff --git a/doc/src/fix_neb_spin.rst b/doc/src/fix_neb_spin.rst
index 6e1978df03..1f89a4b665 100644
--- a/doc/src/fix_neb_spin.rst
+++ b/doc/src/fix_neb_spin.rst
@@ -21,7 +21,9 @@ Syntax
 Examples
 """"""""
 
-fix 1 active neb/spin 1.0
+.. code-block:: LAMMPS
+
+   fix 1 active neb/spin 1.0
 
 Description
 """""""""""
diff --git a/doc/src/fix_nh.rst b/doc/src/fix_nh.rst
index 3f3c573e44..214ec9c3e9 100644
--- a/doc/src/fix_nh.rst
+++ b/doc/src/fix_nh.rst
@@ -84,7 +84,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nvt temp 300.0 300.0 100.0
    fix 1 water npt temp 300.0 300.0 100.0 iso 0.0 0.0 1000.0
@@ -153,9 +153,9 @@ by the velocity/position update portion of the integration.
    via using an :doc:`immediate variable <variable>` expression accessing
    the thermo property 'dt', which is the length of the time step. Example:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
-   fix 1 all nvt temp 300.0 300.0 $(100.0\*dt)
+   fix 1 all nvt temp 300.0 300.0 $(100.0*dt)
 
 ----------
 
@@ -437,11 +437,15 @@ style "temp" and "pressure", as if one of these sets of commands had
 been issued:
 
 For fix nvt:
-compute fix-ID\_temp group-ID temp
 
-.. parsed-literal::
+.. code-block:: LAMMPS
+
+   compute fix-ID_temp group-ID temp
+
+For fix npt and fix nph:
+
+.. code-block:: LAMMPS
 
-   For fix npt and fix nph:
    compute fix-ID_temp all temp
    compute fix-ID_press all pressure fix-ID_temp
 
diff --git a/doc/src/fix_nh_eff.rst b/doc/src/fix_nh_eff.rst
index 1417453706..2d6b542edf 100644
--- a/doc/src/fix_nh_eff.rst
+++ b/doc/src/fix_nh_eff.rst
@@ -45,7 +45,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nvt/eff temp 300.0 300.0 0.1
    fix 1 part npt/eff temp 300.0 300.0 0.1 iso 0.0 0.0 1.0
diff --git a/doc/src/fix_nh_uef.rst b/doc/src/fix_nh_uef.rst
index 15dc43dc46..251b1675b9 100644
--- a/doc/src/fix_nh_uef.rst
+++ b/doc/src/fix_nh_uef.rst
@@ -32,7 +32,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix uniax_nvt all nvt/uef temp 400 400 100 erate 0.00001 -0.000005
    fix biax_nvt all nvt/uef temp 400 400 100 erate 0.000005 0.000005
@@ -116,7 +116,7 @@ pressure (Pxx+Pyy)/2 will be controlled.
 This example command will control the total hydrostatic pressure under
 uniaxial tension:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix f1 all npt/uef temp 0.7 0.7 0.5 iso 1 1 5 erate -0.5 -0.5 ext xyz
 
@@ -124,7 +124,7 @@ This example command will control the average stress in compression
 directions, which would typically correspond to free surfaces under
 drawing with uniaxial tension:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix f2 all npt/uef temp 0.7 0.7 0.5 iso 1 1 5 erate -0.5 -0.5 ext xy
 
@@ -140,14 +140,14 @@ method.
 
 For example, the following commands will work:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix f3 all npt/uef temp 0.7 0.7 0.5 x 1 1 5 y 1 1 5 erate -0.5 -0.5
    fix f4 all npt/uef temp 0.7 0.7 0.5 z 1 1 5 erate 0.5 0.5
 
 The following commands will not work:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix f5 all npt/uef temp 0.7 0.7 0.5 x 1 1 5 z 1 1 5 erate -0.5 -0.5
    fix f6 all npt/uef temp 0.7 0.7 0.5 x 1 1 5 z 2 2 5 erate 0.5 0.5
@@ -159,7 +159,7 @@ this, it creates its own computes of style "temp/uef" and
 "pressure/uef", as if one of these two sets of commands had been
 issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp group-ID temp/uef
    compute fix-ID_press group-ID pressure/uef fix-ID_temp
diff --git a/doc/src/fix_nph_asphere.rst b/doc/src/fix_nph_asphere.rst
index 814e8c18aa..c3f2904301 100644
--- a/doc/src/fix_nph_asphere.rst
+++ b/doc/src/fix_nph_asphere.rst
@@ -20,7 +20,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nph/asphere iso 0.0 0.0 1000.0
    fix 2 all nph/asphere x 5.0 5.0 1000.0
@@ -61,7 +61,7 @@ This fix computes a temperature and pressure each timestep.  To do
 this, the fix creates its own computes of style "temp/asphere" and
 "pressure", as if these commands had been issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp all temp/asphere
    compute fix-ID_press all pressure fix-ID_temp
diff --git a/doc/src/fix_nph_body.rst b/doc/src/fix_nph_body.rst
index 81689d3c30..d2d7542467 100644
--- a/doc/src/fix_nph_body.rst
+++ b/doc/src/fix_nph_body.rst
@@ -17,7 +17,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nph/body iso 0.0 0.0 1000.0
    fix 2 all nph/body x 5.0 5.0 1000.0
@@ -58,7 +58,7 @@ This fix computes a temperature and pressure each timestep.  To do
 this, the fix creates its own computes of style "temp/body" and
 "pressure", as if these commands had been issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp all temp/body
    compute fix-ID_press all pressure fix-ID_temp
diff --git a/doc/src/fix_nph_sphere.rst b/doc/src/fix_nph_sphere.rst
index 2a01b1690c..d71593e4b1 100644
--- a/doc/src/fix_nph_sphere.rst
+++ b/doc/src/fix_nph_sphere.rst
@@ -26,7 +26,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nph/sphere iso 0.0 0.0 1000.0
    fix 2 all nph/sphere x 5.0 5.0 1000.0
@@ -74,7 +74,7 @@ This fix computes a temperature and pressure each timestep.  To do
 this, the fix creates its own computes of style "temp/sphere" and
 "pressure", as if these commands had been issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp all temp/sphere
    compute fix-ID_press all pressure fix-ID_temp
diff --git a/doc/src/fix_nphug.rst b/doc/src/fix_nphug.rst
index fa5752b41a..fb64966291 100644
--- a/doc/src/fix_nphug.rst
+++ b/doc/src/fix_nphug.rst
@@ -44,7 +44,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix myhug all nphug temp 1.0 1.0 10.0 z 40.0 40.0 70.0
    fix myhug all nphug temp 1.0 1.0 10.0 iso 40.0 40.0 70.0 drag 200.0 tchain 1 pchain 0
@@ -120,7 +120,7 @@ This fix computes a temperature and pressure at each timestep.  To do
 this, the fix creates its own computes of style "temp" and "pressure",
 as if one of these two sets of commands had been issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp group-ID temp
    compute fix-ID_press group-ID pressure fix-ID_temp
diff --git a/doc/src/fix_npt_asphere.rst b/doc/src/fix_npt_asphere.rst
index 41766a0130..644e10ee1e 100644
--- a/doc/src/fix_npt_asphere.rst
+++ b/doc/src/fix_npt_asphere.rst
@@ -20,7 +20,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all npt/asphere temp 300.0 300.0 100.0 iso 0.0 0.0 1000.0
    fix 2 all npt/asphere temp 300.0 300.0 100.0 x 5.0 5.0 1000.0
@@ -69,7 +69,7 @@ This fix computes a temperature and pressure each timestep.  To do
 this, the fix creates its own computes of style "temp/asphere" and
 "pressure", as if these commands had been issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp all temp/asphere
    compute fix-ID_press all pressure fix-ID_temp
diff --git a/doc/src/fix_npt_body.rst b/doc/src/fix_npt_body.rst
index aab32f664c..1a6caebb79 100644
--- a/doc/src/fix_npt_body.rst
+++ b/doc/src/fix_npt_body.rst
@@ -17,7 +17,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all npt/body temp 300.0 300.0 100.0 iso 0.0 0.0 1000.0
    fix 2 all npt/body temp 300.0 300.0 100.0 x 5.0 5.0 1000.0
@@ -66,7 +66,7 @@ This fix computes a temperature and pressure each timestep.  To do
 this, the fix creates its own computes of style "temp/body" and
 "pressure", as if these commands had been issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp all temp/body
    compute fix-ID_press all pressure fix-ID_temp
diff --git a/doc/src/fix_npt_cauchy.rst b/doc/src/fix_npt_cauchy.rst
index 936369195d..d548002f0e 100644
--- a/doc/src/fix_npt_cauchy.rst
+++ b/doc/src/fix_npt_cauchy.rst
@@ -54,7 +54,9 @@ Syntax
 Examples
 """"""""
 
-fix 1 water npt/cauchy temp 300.0 300.0 100.0 iso 0.0 0.0 1000.0
+.. code-block:: LAMMPS
+
+   fix 1 water npt/cauchy temp 300.0 300.0 100.0 iso 0.0 0.0 1000.0
 
 Description
 """""""""""
@@ -379,7 +381,7 @@ This fix compute a temperature and pressure each timestep.  To do
 this, the fix creates its own computes of style "temp" and "pressure",
 as if one of these sets of commands had been issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp all temp
    compute fix-ID_press all pressure fix-ID_temp
diff --git a/doc/src/fix_npt_sphere.rst b/doc/src/fix_npt_sphere.rst
index 3d16e717ca..48fdbd90fb 100644
--- a/doc/src/fix_npt_sphere.rst
+++ b/doc/src/fix_npt_sphere.rst
@@ -27,7 +27,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all npt/sphere temp 300.0 300.0 100.0 iso 0.0 0.0 1000.0
    fix 2 all npt/sphere temp 300.0 300.0 100.0 x 5.0 5.0 1000.0
@@ -82,7 +82,7 @@ This fix computes a temperature and pressure each timestep.  To do
 this, the fix creates its own computes of style "temp/sphere" and
 "pressure", as if these commands had been issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp all temp/sphere
    compute fix-ID_press all pressure fix-ID_temp
diff --git a/doc/src/fix_nve.rst b/doc/src/fix_nve.rst
index 9ddac818bc..367cdd5552 100644
--- a/doc/src/fix_nve.rst
+++ b/doc/src/fix_nve.rst
@@ -25,7 +25,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nve
 
diff --git a/doc/src/fix_nve_asphere.rst b/doc/src/fix_nve_asphere.rst
index 29d9941029..deda3ded70 100644
--- a/doc/src/fix_nve_asphere.rst
+++ b/doc/src/fix_nve_asphere.rst
@@ -19,7 +19,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nve/asphere
 
diff --git a/doc/src/fix_nve_asphere_noforce.rst b/doc/src/fix_nve_asphere_noforce.rst
index 699749a969..675e3b6684 100644
--- a/doc/src/fix_nve_asphere_noforce.rst
+++ b/doc/src/fix_nve_asphere_noforce.rst
@@ -16,7 +16,9 @@ Syntax
 Examples
 """"""""
 
-fix 1 all nve/asphere/noforce
+.. code-block:: LAMMPS
+
+   fix 1 all nve/asphere/noforce
 
 Description
 """""""""""
diff --git a/doc/src/fix_nve_awpmd.rst b/doc/src/fix_nve_awpmd.rst
index a57423282e..07f98a6a34 100644
--- a/doc/src/fix_nve_awpmd.rst
+++ b/doc/src/fix_nve_awpmd.rst
@@ -16,7 +16,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nve/awpmd
 
diff --git a/doc/src/fix_nve_body.rst b/doc/src/fix_nve_body.rst
index 2cb4e1097d..96134e2974 100644
--- a/doc/src/fix_nve_body.rst
+++ b/doc/src/fix_nve_body.rst
@@ -16,7 +16,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nve/body
 
diff --git a/doc/src/fix_nve_dot.rst b/doc/src/fix_nve_dot.rst
index 8960fbe0bf..a7018a337e 100644
--- a/doc/src/fix_nve_dot.rst
+++ b/doc/src/fix_nve_dot.rst
@@ -16,7 +16,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nve/dot
 
diff --git a/doc/src/fix_nve_eff.rst b/doc/src/fix_nve_eff.rst
index 2d21bcc60f..57cfc6cd14 100644
--- a/doc/src/fix_nve_eff.rst
+++ b/doc/src/fix_nve_eff.rst
@@ -16,7 +16,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nve/eff
 
diff --git a/doc/src/fix_nve_limit.rst b/doc/src/fix_nve_limit.rst
index 5b83e1ab63..d600eb4e66 100644
--- a/doc/src/fix_nve_limit.rst
+++ b/doc/src/fix_nve_limit.rst
@@ -17,7 +17,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nve/limit 0.1
 
diff --git a/doc/src/fix_nve_line.rst b/doc/src/fix_nve_line.rst
index 1515899631..208759116b 100644
--- a/doc/src/fix_nve_line.rst
+++ b/doc/src/fix_nve_line.rst
@@ -16,7 +16,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nve/line
 
diff --git a/doc/src/fix_nve_manifold_rattle.rst b/doc/src/fix_nve_manifold_rattle.rst
index df5555efa4..3e8ee059a0 100644
--- a/doc/src/fix_nve_manifold_rattle.rst
+++ b/doc/src/fix_nve_manifold_rattle.rst
@@ -27,7 +27,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nve/manifold/rattle 1e-4 10 sphere 5.0
    fix step all nve/manifold/rattle 1e-8 100 ellipsoid 2.5 2.5 5.0 every 25
@@ -55,7 +55,7 @@ write a script.
 
 The manifold args may be equal-style variables, like so:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    variable R equal "ramp(5.0,3.0)"
    fix shrink_sphere all nve/manifold/rattle 1e-4 10 sphere v_R
diff --git a/doc/src/fix_nve_noforce.rst b/doc/src/fix_nve_noforce.rst
index da5f122df5..0bc2624ce2 100644
--- a/doc/src/fix_nve_noforce.rst
+++ b/doc/src/fix_nve_noforce.rst
@@ -16,7 +16,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 3 wall nve/noforce
 
diff --git a/doc/src/fix_nve_sphere.rst b/doc/src/fix_nve_sphere.rst
index fc34785ae1..c92605aa28 100644
--- a/doc/src/fix_nve_sphere.rst
+++ b/doc/src/fix_nve_sphere.rst
@@ -31,7 +31,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nve/sphere
    fix 1 all nve/sphere update dipole
diff --git a/doc/src/fix_nve_spin.rst b/doc/src/fix_nve_spin.rst
index 8167c408d9..4ba1f945da 100644
--- a/doc/src/fix_nve_spin.rst
+++ b/doc/src/fix_nve_spin.rst
@@ -23,7 +23,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 3 all nve/spin lattice moving
    fix 1 all nve/spin lattice frozen
@@ -64,7 +64,7 @@ info.
 To use the spin algorithm, it is necessary to define a map with
 the atom\_modify command. Typically, by adding the command:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    atom_modify map array
 
diff --git a/doc/src/fix_nve_tri.rst b/doc/src/fix_nve_tri.rst
index 7fd325f6af..0b0a48249a 100644
--- a/doc/src/fix_nve_tri.rst
+++ b/doc/src/fix_nve_tri.rst
@@ -16,7 +16,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nve/tri
 
diff --git a/doc/src/fix_nvk.rst b/doc/src/fix_nvk.rst
index 5b88a3e7c5..aafeb1fde7 100644
--- a/doc/src/fix_nvk.rst
+++ b/doc/src/fix_nvk.rst
@@ -16,7 +16,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nvk
 
diff --git a/doc/src/fix_nvt_asphere.rst b/doc/src/fix_nvt_asphere.rst
index 46b3354f53..4db500e279 100644
--- a/doc/src/fix_nvt_asphere.rst
+++ b/doc/src/fix_nvt_asphere.rst
@@ -20,7 +20,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nvt/asphere temp 300.0 300.0 100.0
    fix 1 all nvt/asphere temp 300.0 300.0 100.0 drag 0.2
@@ -53,7 +53,7 @@ This fix computes a temperature each timestep.  To do this, the fix
 creates its own compute of style "temp/asphere", as if this command
 had been issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp group-ID temp/asphere
 
diff --git a/doc/src/fix_nvt_body.rst b/doc/src/fix_nvt_body.rst
index 0299d5cbca..37dc4d1f0b 100644
--- a/doc/src/fix_nvt_body.rst
+++ b/doc/src/fix_nvt_body.rst
@@ -17,7 +17,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nvt/body temp 300.0 300.0 100.0
    fix 1 all nvt/body temp 300.0 300.0 100.0 drag 0.2
@@ -50,7 +50,7 @@ This fix computes a temperature each timestep.  To do this, the fix
 creates its own compute of style "temp/body", as if this command
 had been issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp group-ID temp/body
 
diff --git a/doc/src/fix_nvt_manifold_rattle.rst b/doc/src/fix_nvt_manifold_rattle.rst
index 1e4200dd0f..f7a14fa266 100644
--- a/doc/src/fix_nvt_manifold_rattle.rst
+++ b/doc/src/fix_nvt_manifold_rattle.rst
@@ -32,7 +32,9 @@ Syntax
 Examples
 """"""""
 
-fix 1 all nvt/manifold/rattle 1e-4 10 cylinder 3.0 temp 1.0 1.0 10.0
+.. code-block:: LAMMPS
+
+   fix 1 all nvt/manifold/rattle 1e-4 10 cylinder 3.0 temp 1.0 1.0 10.0
 
 Description
 """""""""""
diff --git a/doc/src/fix_nvt_sllod.rst b/doc/src/fix_nvt_sllod.rst
index 1e61055cfc..e8f4b840d1 100644
--- a/doc/src/fix_nvt_sllod.rst
+++ b/doc/src/fix_nvt_sllod.rst
@@ -23,7 +23,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nvt/sllod temp 300.0 300.0 100.0
    fix 1 all nvt/sllod temp 300.0 300.0 100.0 drag 0.2
@@ -85,7 +85,7 @@ This fix computes a temperature each timestep.  To do this, the fix
 creates its own compute of style "temp/deform", as if this command had
 been issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp group-ID temp/deform
 
diff --git a/doc/src/fix_nvt_sllod_eff.rst b/doc/src/fix_nvt_sllod_eff.rst
index 139b5762d5..f2b3edd366 100644
--- a/doc/src/fix_nvt_sllod_eff.rst
+++ b/doc/src/fix_nvt_sllod_eff.rst
@@ -17,7 +17,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nvt/sllod/eff temp 300.0 300.0 0.1
    fix 1 all nvt/sllod/eff temp 300.0 300.0 0.1 drag 0.2
diff --git a/doc/src/fix_nvt_sphere.rst b/doc/src/fix_nvt_sphere.rst
index d7c4634228..f9d5fd954f 100644
--- a/doc/src/fix_nvt_sphere.rst
+++ b/doc/src/fix_nvt_sphere.rst
@@ -27,7 +27,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all nvt/sphere temp 300.0 300.0 100.0
    fix 1 all nvt/sphere temp 300.0 300.0 100.0 disc
@@ -67,7 +67,7 @@ This fix computes a temperature each timestep.  To do this, the fix
 creates its own compute of style "temp/sphere", as if this command
 had been issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp group-ID temp/sphere
 
diff --git a/doc/src/fix_oneway.rst b/doc/src/fix_oneway.rst
index ade25e39ac..6444776a6b 100644
--- a/doc/src/fix_oneway.rst
+++ b/doc/src/fix_oneway.rst
@@ -19,7 +19,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix ions oneway 10 semi -x
    fix all oneway 1 left -z
diff --git a/doc/src/fix_orient.rst b/doc/src/fix_orient.rst
index 72bdc57bb7..cf85a253f7 100644
--- a/doc/src/fix_orient.rst
+++ b/doc/src/fix_orient.rst
@@ -22,7 +22,7 @@ fix orient/bcc command
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix gb all orient/fcc 0 1 4.032008 0.001 0.25 0.75 xi.vec chi.vec
    fix gb all orient/bcc 0 1 2.882 0.001 0.25 0.75 ngb.left ngb.right
diff --git a/doc/src/fix_phonon.rst b/doc/src/fix_phonon.rst
index df31c2530e..43178d6958 100644
--- a/doc/src/fix_phonon.rst
+++ b/doc/src/fix_phonon.rst
@@ -41,7 +41,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all phonon 20 5000 200000 map.in LJ1D sysdim 1
    fix 1 all phonon 20 5000 200000 map.in EAM3D
diff --git a/doc/src/fix_pimd.rst b/doc/src/fix_pimd.rst
index bdf4734dd0..5bc7b75c90 100644
--- a/doc/src/fix_pimd.rst
+++ b/doc/src/fix_pimd.rst
@@ -26,7 +26,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all pimd method nmpimd fmass 1.0 sp 2.0 temp 300.0 nhc 4
 
@@ -128,14 +128,14 @@ To run a PIMD simulation with M quasi-beads in each ring polymer using
 N MPI tasks for each partition's domain-decomposition, you would use P
 = MxN processors (cores) and run the simulation as follows:
 
-.. parsed-literal::
+.. code-block:: bash
 
    mpirun -np P lmp_mpi -partition MxN -in script
 
 Note that in the LAMMPS input script for a multi-partition simulation,
 it is often very useful to define a :doc:`uloop-style variable <variable>` such as
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    variable ibead uloop M pad
 
@@ -143,7 +143,7 @@ where M is the number of quasi-beads (partitions) used in the
 calculation.  The uloop variable can then be used to manage I/O
 related tasks for each of the partitions, e.g.
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    dump dcd all dcd 10 system_${ibead}.dcd
    restart 1000 system_${ibead}.restart1 system_${ibead}.restart2
@@ -163,7 +163,7 @@ To avoid this, users can simply initialize velocities with different
 random number seeds assigned to each partition, as defined by the
 uloop variable, e.g.
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    velocity all create 300.0 1234${ibead} rot yes dist gaussian
 
diff --git a/doc/src/fix_planeforce.rst b/doc/src/fix_planeforce.rst
index e83cbc84b4..a3df6bff14 100644
--- a/doc/src/fix_planeforce.rst
+++ b/doc/src/fix_planeforce.rst
@@ -17,7 +17,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix hold boundary planeforce 1.0 0.0 0.0
 
diff --git a/doc/src/fix_plumed.rst b/doc/src/fix_plumed.rst
index 7f033c3f87..32472c829c 100644
--- a/doc/src/fix_plumed.rst
+++ b/doc/src/fix_plumed.rst
@@ -22,7 +22,9 @@ Syntax
 Examples
 """"""""
 
-fix pl all plumed all plumed plumedfile plumed.dat outfile p.log
+.. code-block:: LAMMPS
+
+   fix pl all plumed all plumed plumedfile plumed.dat outfile p.log
 
 Description
 """""""""""
diff --git a/doc/src/fix_poems.rst b/doc/src/fix_poems.rst
index c1ef3f8a15..b53252668a 100644
--- a/doc/src/fix_poems.rst
+++ b/doc/src/fix_poems.rst
@@ -22,7 +22,7 @@ Syntax:
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 3 fluid poems group clump1 clump2 clump3
    fix 3 fluid poems file cluster.list
diff --git a/doc/src/fix_pour.rst b/doc/src/fix_pour.rst
index 7d9e4c33c9..ce89f6a227 100644
--- a/doc/src/fix_pour.rst
+++ b/doc/src/fix_pour.rst
@@ -63,7 +63,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 3 all pour 1000 2 29494 region myblock
    fix 2 all pour 10000 1 19985583 region disk vol 0.33 100 rate 1.0 diam range 0.9 1.1
diff --git a/doc/src/fix_press_berendsen.rst b/doc/src/fix_press_berendsen.rst
index b38db2564d..a5dc37965c 100644
--- a/doc/src/fix_press_berendsen.rst
+++ b/doc/src/fix_press_berendsen.rst
@@ -30,7 +30,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all press/berendsen iso 0.0 0.0 1000.0
    fix 2 all press/berendsen aniso 0.0 0.0 1000.0 dilate partial
@@ -171,7 +171,7 @@ This fix computes a temperature and pressure each timestep.  To do
 this, the fix creates its own computes of style "temp" and "pressure",
 as if these commands had been issued:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    compute fix-ID_temp group-ID temp
    compute fix-ID_press group-ID pressure fix-ID_temp
diff --git a/doc/src/fix_print.rst b/doc/src/fix_print.rst
index e87eb26f4c..e3d64de8e7 100644
--- a/doc/src/fix_print.rst
+++ b/doc/src/fix_print.rst
@@ -28,7 +28,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix extra all print 100 "Coords of marker atom = $x $y $z"
    fix extra all print 100 "Coords of marker atom = $x $y $z" file coord.txt
@@ -54,7 +54,7 @@ and logfreq() and stride() math functions for :doc:`equal-style variables <varia
 this context. For example, the following commands will print output at
 timesteps 10,20,30,100,200,300,1000,2000,etc:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    variable        s equal logfreq(10,3,10)
    fix extra all print v_s "Coords of marker atom = $x $y $z"
diff --git a/doc/src/fix_propel_self.rst b/doc/src/fix_propel_self.rst
index 44d6d83318..d67fd32deb 100644
--- a/doc/src/fix_propel_self.rst
+++ b/doc/src/fix_propel_self.rst
@@ -6,7 +6,9 @@ fix propel/self command
 Syntax
 """"""
 
-fix ID group-ID propel/self mode magnitude keyword values ...
+.. parsed-literal::
+
+   fix ID group-ID propel/self mode magnitude keyword values ...
 
 * ID, group-ID are documented in :doc:`fix <fix>` command
 * propel/self = style name of this fix command
@@ -20,7 +22,7 @@ fix ID group-ID propel/self mode magnitude keyword values ...
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix active_group all propel/self velocity 1.0
    fix constant_velocity all viscous 1.0
diff --git a/doc/src/fix_property_atom.rst b/doc/src/fix_property_atom.rst
index b78eb1c324..63cdbd0701 100644
--- a/doc/src/fix_property_atom.rst
+++ b/doc/src/fix_property_atom.rst
@@ -35,7 +35,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all property/atom mol
    fix 1 all property/atom i_myflag1 i_myflag2
@@ -148,7 +148,7 @@ passing it the fix-ID of this fix.
 
 Thus these commands:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix prop all property/atom mol d_flag
    read_data data.txt fix prop NULL Molecules
@@ -177,11 +177,11 @@ Another way of initializing the new properties is via the
 defined for every set of 10 atoms, based on their atom-IDs,
 these commands could be used:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix prop all property/atom mol
    variable cluster atom ((id-1)/10)+1
-   set atom \* mol v_cluster
+   set atom * mol v_cluster
 
 The :doc:`atom-style variable <variable>` will create values for atoms
 with IDs 31,32,33,...40 that are 4.0,4.1,4.2,...,4.9.  When the
@@ -204,7 +204,7 @@ their values.  This means that the values can be output via the :doc:`dump custo
 For example, these commands will output two new properties to a custom
 dump file:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix prop all property/atom i_flag1 d_flag2
    compute 1 all property/atom i_flag1 d_flag2
@@ -233,7 +233,7 @@ for regular TIP4P water, where water oxygen is atom type 1 and water
 hydrogen is atom type 2, the following lines of input script convert
 this to using per-atom masses:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix Isotopes all property/atom rmass ghost yes
    set type 1 mass 15.9994
@@ -246,7 +246,7 @@ existing data file and just add this *Isotopes* section with
 one line per atom containing atom-ID and mass. Either way, the
 extended data file can be read back with:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix Isotopes all property/atom rmass ghost yes
    read_data tip4p-isotopes.data fix Isotopes NULL Isotopes
@@ -256,7 +256,7 @@ and the second to the name of the section. The following input
 script code will now change the first 100 water molecules in this
 example to heavy water:
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    group hwat id 2:300:3
    group hwat id 3:300:3
diff --git a/doc/src/fix_python_invoke.rst b/doc/src/fix_python_invoke.rst
index c6f96ef4d6..0144e3c4f7 100644
--- a/doc/src/fix_python_invoke.rst
+++ b/doc/src/fix_python_invoke.rst
@@ -23,7 +23,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    python post_force_callback here """
    from lammps import lammps
diff --git a/doc/src/fix_python_move.rst b/doc/src/fix_python_move.rst
index 4ea6f14e94..af32106806 100644
--- a/doc/src/fix_python_move.rst
+++ b/doc/src/fix_python_move.rst
@@ -15,7 +15,7 @@ pymodule.CLASS = use class **CLASS** in module/file **pymodule** to compute how
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix  1 all python/move py_nve.NVE
    fix  1 all python/move py_nve.NVE_OPT
@@ -39,9 +39,9 @@ performance penalty can be limited through effective use of NumPy.
 
 The python module file has to start with the following code:
 
-.. parsed-literal::
+.. code-block:: python
 
-   from __future_\_ import print_function
+   from __future__ import print_function
    import lammps
    import ctypes
    import traceback
diff --git a/doc/src/fix_qeq.rst b/doc/src/fix_qeq.rst
index f205d1fe9a..418fc383b4 100644
--- a/doc/src/fix_qeq.rst
+++ b/doc/src/fix_qeq.rst
@@ -41,7 +41,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all qeq/point 1 10 1.0e-6 200 param.qeq1
    fix 1 qeq qeq/shielded 1 8 1.0e-6 100 param.qeq2
diff --git a/doc/src/fix_qeq_comb.rst b/doc/src/fix_qeq_comb.rst
index 34c40b6184..012f524b9e 100644
--- a/doc/src/fix_qeq_comb.rst
+++ b/doc/src/fix_qeq_comb.rst
@@ -28,7 +28,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 surface qeq/comb 10 0.0001
 
diff --git a/doc/src/fix_qeq_reax.rst b/doc/src/fix_qeq_reax.rst
index af3dfeba1b..854dc01991 100644
--- a/doc/src/fix_qeq_reax.rst
+++ b/doc/src/fix_qeq_reax.rst
@@ -27,7 +27,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all qeq/reax 1 0.0 10.0 1.0e-6 reax/c
    fix 1 all qeq/reax 1 0.0 10.0 1.0e-6 param.qeq
diff --git a/doc/src/fix_qmmm.rst b/doc/src/fix_qmmm.rst
index a7670cee35..889004b9f8 100644
--- a/doc/src/fix_qmmm.rst
+++ b/doc/src/fix_qmmm.rst
@@ -16,7 +16,9 @@ Syntax
 Examples
 """"""""
 
-fix 1 qmol qmmm
+.. code-block:: LAMMPS
+
+   fix 1 qmol qmmm
 
 Description
 """""""""""
diff --git a/doc/src/fix_reaxc_bonds.rst b/doc/src/fix_reaxc_bonds.rst
index 7dcf8eda8e..01b1a8dadf 100644
--- a/doc/src/fix_reaxc_bonds.rst
+++ b/doc/src/fix_reaxc_bonds.rst
@@ -21,7 +21,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all reax/c/bonds 100 bonds.reaxc
 
diff --git a/doc/src/fix_reaxc_species.rst b/doc/src/fix_reaxc_species.rst
index 8d22434a95..96ad89d7fe 100644
--- a/doc/src/fix_reaxc_species.rst
+++ b/doc/src/fix_reaxc_species.rst
@@ -35,7 +35,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all reax/c/species 10 10 100 species.out
    fix 1 all reax/c/species 1 2 20 species.out cutoff 1 1 0.40 cutoff 1 2 0.55
diff --git a/doc/src/fix_recenter.rst b/doc/src/fix_recenter.rst
index 4a7572f63e..88cdc8d227 100644
--- a/doc/src/fix_recenter.rst
+++ b/doc/src/fix_recenter.rst
@@ -25,7 +25,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 all recenter 0.0 0.5 0.0
    fix 1 all recenter INIT INIT NULL
diff --git a/doc/src/fix_rhok.rst b/doc/src/fix_rhok.rst
index 41b6db6e60..089c96dd50 100644
--- a/doc/src/fix_rhok.rst
+++ b/doc/src/fix_rhok.rst
@@ -15,7 +15,7 @@ fix rhok command
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix bias all rhok 16 0 0 4.0 16.0
    fix 1 all npt temp 0.8 0.8 4.0 z 2.2 2.2 8.0
diff --git a/doc/src/fix_rigid_meso.rst b/doc/src/fix_rigid_meso.rst
index 3375c46ff3..eec2686be7 100644
--- a/doc/src/fix_rigid_meso.rst
+++ b/doc/src/fix_rigid_meso.rst
@@ -43,7 +43,7 @@ Syntax
 Examples
 """"""""
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    fix 1 ellipsoid rigid/meso single
    fix 1 rods      rigid/meso molecule