diff --git a/doc/Section_start.html b/doc/Section_start.html
index f9b87062eb..f4d4d0d5d9 100644
--- a/doc/Section_start.html
+++ b/doc/Section_start.html
@@ -38,7 +38,7 @@ tar xvf lammps*.tar
This will create a LAMMPS directory containing two files and several
sub-directories:
-
+
| README | text file |
| LICENSE | the GNU General Public License (GPL) |
| bench | benchmark problems |
@@ -350,7 +350,7 @@ package".
The current list of standard packages is as follows:
-
+
| asphere | aspherical particles and force fields |
| class2 | class 2 force fields |
| colloid | colloidal particle force fields |
diff --git a/doc/fix_wall_region.html b/doc/fix_wall_region.html
index 85ec827106..5234bb5bf5 100644
--- a/doc/fix_wall_region.html
+++ b/doc/fix_wall_region.html
@@ -53,7 +53,11 @@ surface in a prescribed manner.
page, regions in LAMMPS do not get wrapped across periodic boundaries.
It is up to you to insure that periodic or non-periodic boundaries are
specified appropriately via the boundary command when
-using a region as a wall that bounds particle motion.
+using a region as a wall that bounds particle motion. This also means
+that if you embed a region in your simulation box and want it to
+repulse particles from its surface (using the "side out" option in the
+region command), that its repulsive force will not be
+felt across a periodic boundary.
IMPORTANT NOTE: For primitive regions with sharp corners and/or edges
(e.g. a block or cylinder), wall/particle forces are computed
diff --git a/doc/fix_wall_region.txt b/doc/fix_wall_region.txt
index a6f070bbf4..a2651cb0cd 100644
--- a/doc/fix_wall_region.txt
+++ b/doc/fix_wall_region.txt
@@ -50,7 +50,11 @@ IMPORTANT NOTE: As discussed on the "region"_region.html command doc
page, regions in LAMMPS do not get wrapped across periodic boundaries.
It is up to you to insure that periodic or non-periodic boundaries are
specified appropriately via the "boundary"_boundary.html command when
-using a region as a wall that bounds particle motion.
+using a region as a wall that bounds particle motion. This also means
+that if you embed a region in your simulation box and want it to
+repulse particles from its surface (using the "side out" option in the
+"region"_region.html command), that its repulsive force will not be
+felt across a periodic boundary.
IMPORTANT NOTE: For primitive regions with sharp corners and/or edges
(e.g. a block or cylinder), wall/particle forces are computed