From 2beb8d3ebde2ed26e20baebda113dc9f5715a922 Mon Sep 17 00:00:00 2001
From: sjplimp <sjplimp@f3b2605a-c512-4ea7-a41b-209d697bcdaa>
Date: Thu, 19 Aug 2010 16:01:18 +0000
Subject: [PATCH] git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@4506
 f3b2605a-c512-4ea7-a41b-209d697bcdaa

---
 doc/region.html | 10 ++++++++--
 doc/region.txt  |  8 +++++++-
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/doc/region.html b/doc/region.html
index 1ffa4dd964..9ea592dfb8 100644
--- a/doc/region.html
+++ b/doc/region.html
@@ -17,9 +17,10 @@
 </PRE>
 <UL><LI>ID = user-assigned name for the region 
 
-<LI>style = <I>block</I> or <I>cone</I> or <I>cylinder</I> or <I>plane</I> or <I>prism</I> or <I>sphere</I> or <I>union</I> or <I>intersect</I> 
+<LI>style = <I>delete</I> or <I>block</I> or <I>cone</I> or <I>cylinder</I> or <I>plane</I> or <I>prism</I> or <I>sphere</I> or <I>union</I> or <I>intersect</I> 
 
-<PRE>  <I>block</I> args = xlo xhi ylo yhi zlo zhi
+<PRE>  <I>delete</I> = no args
+  <I>block</I> args = xlo xhi ylo yhi zlo zhi
     xlo,xhi,ylo,yhi,zlo,zhi = bounds of block in all dimensions (distance units)
   <I>cone</I> args = dim c1 c2 radlo radhi lo hi
     dim = <I>x</I> or <I>y</I> or <I>z</I> = axis of cone
@@ -99,6 +100,11 @@ compute temp/region command, or when the fix wall/region command uses
 a region surface as a bounding wall on particle motion, i.e. a
 rotating container.
 </P>
+<P>The <I>delete</I> style removes the named region.  Since there is little
+overhead to defining extra regions, there is normally no need to do
+this, unless you are defining and discarding large numbers of regions
+in your input script.
+</P>
 <P>The lo/hi values for <I>block</I> or <I>cone</I> or <I>cylinder</I> or <I>prism</I> styles
 can be specified as EDGE or INF.  EDGE means they extend all the way
 to the global simulation box boundary.  Note that this is the current
diff --git a/doc/region.txt b/doc/region.txt
index 33209d041b..24675fff1d 100644
--- a/doc/region.txt
+++ b/doc/region.txt
@@ -13,7 +13,8 @@ region command :h3
 region ID style args keyword value ... :pre
 
 ID = user-assigned name for the region :ulb,l
-style = {block} or {cone} or {cylinder} or {plane} or {prism} or {sphere} or {union} or {intersect} :l
+style = {delete} or {block} or {cone} or {cylinder} or {plane} or {prism} or {sphere} or {union} or {intersect} :l
+  {delete} = no args
   {block} args = xlo xhi ylo yhi zlo zhi
     xlo,xhi,ylo,yhi,zlo,zhi = bounds of block in all dimensions (distance units)
   {cone} args = dim c1 c2 radlo radhi lo hi
@@ -90,6 +91,11 @@ compute temp/region command, or when the fix wall/region command uses
 a region surface as a bounding wall on particle motion, i.e. a
 rotating container.
 
+The {delete} style removes the named region.  Since there is little
+overhead to defining extra regions, there is normally no need to do
+this, unless you are defining and discarding large numbers of regions
+in your input script.
+
 The lo/hi values for {block} or {cone} or {cylinder} or {prism} styles
 can be specified as EDGE or INF.  EDGE means they extend all the way
 to the global simulation box boundary.  Note that this is the current