diff --git a/doc/src/dump.rst b/doc/src/dump.rst
index e12cd30b7f..6fce1fcaa6 100644
--- a/doc/src/dump.rst
+++ b/doc/src/dump.rst
@@ -363,8 +363,9 @@ attributes is given below.
 
 .. versionadded:: 22Dec2022
 
-For style *grid* the dimension and extent of the Nx by Ny by Nz grid
-that overlays the simulation domain is also output with each snapshot:
+For style *grid* the dimension of the simulation domain and size of
+the Nx by Ny by Nz grid that overlays the simulation domain are also
+output with each snapshot:
 
 .. parsed-literal::
 
@@ -373,15 +374,21 @@ that overlays the simulation domain is also output with each snapshot:
    ITEM: GRID SIZE
    nx ny nz
 
-Dim will be 2 or 3 for 2d or 3d simulations.  For 2d simulations, nz
-will be 1.  There will also be an "ITEM: GRID DATA" line which
-includes column descriptors for the per grid cell data.  Each
-subsequent line (Nx * Ny * Nz lines) will list the data for a single
-grid cell.  If grid cell IDs are included in the output via the
-:doc:`compute property/grid <compute_property_grid>` command, then the
-IDs will range from 1 to N = Nx*Ny*Nz.  The ordering of IDs is with
-the x index varying fastest, then the y index, and the z index varying
-slowest.
+The value dim will be 2 or 3 for 2d or 3d simulations.  It is included
+so that post-processing tools like `OVITO <https://www.ovito.org>`,
+which can visualize grid-based quantities know how to draw each grid
+cell.  The grid size will match the input script parameters for
+grid(s) created by the computes or fixes which are referenced by the
+the dump command.  For 2d simulations (and grids), nz will always
+be 1.
+
+There will also be an "ITEM: GRID DATA" line which includes column
+descriptors for the per grid cell data.  Each subsequent line (Nx *
+Ny * Nz lines) will list the data for a single grid cell.  If grid
+cell IDs are included in the output via the :doc:`compute
+property/grid <compute_property_grid>` command, then the IDs will
+range from 1 to N = Nx*Ny*Nz.  The ordering of IDs is with the x index
+varying fastest, then the y index, and the z index varying slowest.
 
 For style *local*, local output generated by :doc:`computes <compute>`
 and :doc:`fixes <fix>` is used to generate lines of output that is