Edits to modify doc files

doc/src/Modify_atom.rst

@@ -96,7 +96,7 @@ methods that a new variable name or flag needs to be added to.
 In ``Atom::peratom_create()`` when using the ``Atom::add_peratom()``
 method, a cols argument of 0 is for per-atom vectors, a length >
 1 is for per-atom arrays.  Note the use of the extra per-thread flag and
-the add_peratom_vary() method when last dimension of the array is
+the add_peratom_vary() method when the last dimension of the array is
 variable-length.
 
 Adding the variable name to Atom::extract() enables the per-atom data

doc/src/Modify_contribute.rst

@@ -1,7 +1,7 @@
 Submitting new features for inclusion in LAMMPS
 ===============================================
 
-We encourage LAMMPS users to submit new features they wrote for LAMMPS
+We encourage LAMMPS users to submit new features they write for LAMMPS
 to be included in the LAMMPS distribution and thus become easily
 accessible to all LAMMPS users.  The LAMMPS source code is managed
 with git and public development is hosted on `GitHub

doc/src/Modify_gran_sub_mod.rst

@@ -65,37 +65,28 @@ need to be defined
 
 .. list-table::
 
-   * - ``GranSubMod->mix_coeff()``
+   * - ``mix_coeff()``
      - Optional method to define how coefficients are mixed for different atom types. By default, coefficients are mixed using a geometric mean.
-   * - ``GranSubMod->coeffs_to_local()``
+   * - ``coeffs_to_local()``
      - Parses coefficients to define local variables. Run once at model construction.
-   * - ``GranSubMod->init()``
+   * - ``init()``
      - Optional method to define local variables after other GranSubMod types were created. For instance, this method may be used by a tangential model that derives parameters from the normal model.
 
-There are also several type-specific methods
+The Normal, Damping, Tangential, Twisting, and Rolling sub-models also have a
+``calculate_forces()`` method which calculate the respective forces/torques.
+Correspondingly, the Heat sub-model has a ``calculate_heat()`` method. Lastly,
+the Normal sub-model has a few extra optional methods:
 
 .. list-table::
 
-   * - ``GranSubModNormal->touch()``
+   * - ``touch()``
-     - Optional method to test when particles are in contact. By default, this is when particles overlap.
+     - Tests whether particles are in contact. By default, when particles overlap.
-   * - ``GranSubModNormal->pulloff_distance()``
+   * - ``pulloff_distance()``
-     - Optional method to return the distance at which particles stop interacting. By default, this is when particles no longer overlap.
+     - Returns the distance at which particles stop interacting. By default, when particles no longer overlap.
-   * - ``GranSubModNormal->calculate_radius()``
+   * - ``calculate_radius()``
-     - Optional method to return the radius of the contact. By default, this returns the radius of the geometric cross section.
+     - Returns the radius of the contact. By default, the radius of the geometric cross section.
-   * - ``GranSubModNormal->set_fncrit()``
+   * - ``set_fncrit()``
-     - Optional method that defines the critical force to break the contact used by some tangential, rolling, and twisting sub-models. By default, this is the current total normal force including damping.
+     - Defines the critical force to break the contact used by some tangential, rolling, and twisting sub-models. By default, the current total normal force including damping.
-   * - ``GranSubModNormal->calculate_forces()``
-     - Required method that returns the normal contact force
-   * - ``GranSubModDamping->calculate_forces()``
-     - Required method that returns the normal damping force
-   * - ``GranSubModTangential->calculate_forces()``
-     - Required method that calculates tangential forces/torques
-   * - ``GranSubModTwisting->calculate_forces()``
-     - Required method that calculates twisting friction forces/torques
-   * - ``GranSubModRolling->calculate_forces()``
-     - Required method that calculates rolling friction forces/torques
-   * - ``GranSubModHeat->calculate_heat()``
-     - Required method that returns the rate of heat flow
 
 As an example, say one wanted to create a new normal force option that consisted
 of a Hookean force with a piecewise stiffness. This could be done by adding a new

doc/src/Modify_overview.rst

@@ -12,8 +12,8 @@ programming style choices in LAMMPS is :doc:`given elsewhere
 <Developer_code_design>`.
 
 Most of the new features described on the :doc:`Modify <Modify>` doc
-page require you to write a new C++ derived class (except for
+page require you to write a new C++ derived class (excluding exceptions
-exceptions described below, where you can make small edits to existing
+described below, this can often be done by making small edits to existing
 files).  Creating a new class requires 2 files, a source code file
 (\*.cpp) and a header file (\*.h).  The derived class must provide
 certain methods to work as a new option.  Depending on how different
@@ -46,7 +46,7 @@ then your ``pair_foo.h`` file should be structured as follows:
    // clang-format off
    PairStyle(foo,PairFoo);
    #else
-   // clanf-format on
+   // clang-format on
    ...
    (class definition for PairFoo)
    ...

doc/src/Modify_requirements.rst

@@ -184,7 +184,7 @@ package so that it is optional.
 Included Fortran code has to be compatible with the Fortran 2003
 standard.  Since not all platforms supported by LAMMPS provide good
 support for compiling Fortran files, it should be considered to rewrite
-these parts as C++ code, if possible and thus allow for a wider adoption
+these parts as C++ code, if possible, and thus allow for a wider adoption
 of the contribution.  As of January 2023, all previously included
 Fortran code for the LAMMPS executable has been replaced by equivalent
 C++ code.

doc/src/Modify_thermo.rst

@@ -14,7 +14,7 @@ style, but can be adapted using :doc:`thermo_modify line <thermo_modify>`.
 
 The thermo styles (one, multi, etc) are defined by lists of keywords
 with associated formats for integer and floating point numbers and
-identified but an enumerator constant.  Adding a new style thus mostly
+identified by an enumerator constant.  Adding a new style thus mostly
 requires defining a new list of keywords and the associated formats and
 then inserting the required output processing where the enumerators are
 identified.  Search for the word "CUSTOMIZATION" with references to