update some formulations as suggested by @sjplimp

doc/src/Developer_parallel.rst

@@ -1,16 +1,16 @@
 Parallel algorithms
 -------------------
 
-LAMMPS is from ground up designed to be running in parallel using the
+LAMMPS is designed to enable running simulations in parallel using the
-MPI standard with distributed data via domain decomposition.  The
+MPI parallel communication standard with distributed data via domain
-parallelization has to be efficient to enable good strong scaling (=
+decomposition.  The parallelization aims to be efficient result in good
-good speedup for the same system) and good weak scaling (= the
+strong scaling (= good speedup for the same system) and good weak
-computational cost of enlarging the system is proportional to the system
+scaling (= the computational cost of enlarging the system is
-size).  Additional parallelization using GPUs or OpenMP can then be
+proportional to the system size).  Additional parallelization using GPUs
-applied within the sub-domain assigned to an MPI process.  For clarity,
+or OpenMP can also be applied within the sub-domain assigned to an MPI
-most of the following illustrations show the 2d simulation case. The
+process.  For clarity, most of the following illustrations show the 2d
-underlying algorithms in those cases, however, apply to both 2d and 3d
+simulation case. The underlying algorithms in those cases, however,
-cases equally well.
+apply to both 2d and 3d cases equally well.
 
 .. note::
 

doc/src/Intro_citing.rst

@@ -4,27 +4,27 @@ Citing LAMMPS
 Core Algorithms
 ^^^^^^^^^^^^^^^
 
-Since LAMMPS is a community project there is not one single publication
+The paper mentioned below is the best overview of LAMMPS, but there are
-or reference that describes **all** of LAMMPS.  There are publications
+also publications describing particular models or algorithms implemented
-describing the core of LAMMPS, but then also publications describing the
+in LAMMPS or complementary software that is has interfaces to.  Please
-algorithms and methods it implements or the software that it has
+see below for how to cite contributions to LAMMPS.
-interfaces to.  Please see below for how to cite contributions to
-LAMMPS.
 
 .. _lammps_paper:
 
-The canonical publication that describes the basic features, the source
+The latest canonical publication that describes the basic features, the
-code design, the program structure, the spatial decomposition approach,
+source code design, the program structure, the spatial decomposition
-the neighbor finding, basic communications algorithms, and how users and
+approach, the neighbor finding, basic communications algorithms, and how
-developers have contributed to LAMMPS is:
+users and developers have contributed to LAMMPS is:
 
   `LAMMPS - A flexible simulation tool for particle-based materials modeling at the atomic, meso, and continuum scales, Comp. Phys. Comm. (accepted 09/2021), DOI:10.1016/j.cpc.2021.108171 <https://doi.org/10.1016/j.cpc.2021.108171>`_
 
-So any project using LAMMPS or a derivative application that uses LAMMPS
+So a project using LAMMPS or a derivative application that uses LAMMPS
 as a simulation engine should cite this paper.  The paper is expected to
-be published in its final form under the same DOI in the first half of 2022.
+be published in its final form under the same DOI in the first half
+of 2022.
 
-The original publication describing LAMMPS in its early implementations is:
+The original publication describing the parallel algorithms used in the
+initial versions of LAMMPS is:
 
   `S. Plimpton, Fast Parallel Algorithms for Short-Range Molecular Dynamics, J Comp Phys, 117, 1-19 (1995). <http://www.sandia.gov/~sjplimp/papers/jcompphys95.pdf>`_