diff --git a/docs/source/guides/admin-guides/references/man1/nodediscoverdef.1.rst b/docs/source/guides/admin-guides/references/man1/nodediscoverdef.1.rst
index e1d145eea..da7d60081 100644
--- a/docs/source/guides/admin-guides/references/man1/nodediscoverdef.1.rst
+++ b/docs/source/guides/admin-guides/references/man1/nodediscoverdef.1.rst
@@ -11,8 +11,8 @@ NAME
 ****
 
 
-\ **nodediscoverdef**\  - Define the undefined discovery request to a predefined xCAT node, 
-or clean up the discovery entries from the discoverydata table 
+\ **nodediscoverdef**\  - Define the undefined discovery request to a predefined xCAT node,
+or clean up the discovery entries from the discoverydata table
 (which can be displayed by nodediscoverls command)
 
 
@@ -21,9 +21,9 @@ SYNOPSIS
 ********
 
 
-\ **nodediscoverdef**\  \ **-u**\  \ *uuid*\  \ **-n**\  \ *node*\ 
+\ **nodediscoverdef**\  \ **-u**\  \ *uuid*\  \ **-n**\  \ *node*\
 
-\ **nodediscoverdef**\  \ **-r**\  \ **-u**\  \ *uuid*\ 
+\ **nodediscoverdef**\  \ **-r**\  \ **-u**\  \ *uuid*\
 
 \ **nodediscoverdef**\  \ **-r**\  \ **-t**\  {\ **seq | profile | switch | blade | manual | undef | all**\ }
 
@@ -40,7 +40,7 @@ xCAT node. The discovery entry can be displayed by \ **nodediscoverls**\  comman
 
 The options \ **-u**\  and \ **-n**\  have to be used together to define a discovery request to a node.
 
-The \ **nodediscoverdef**\  command also can be used to clean up the discovery entries from the 
+The \ **nodediscoverdef**\  command also can be used to clean up the discovery entries from the
 discoverydata table.
 
 The option \ **-r**\  is used to remove discovery entries. If working with \ **-u**\ , the specific entry
@@ -56,69 +56,69 @@ OPTIONS
 
 
 
-\ **-t seq|profile|switch|blade|manual|undef|all**\ 
- 
+\ **-t seq|profile|switch|blade|manual|undef|all**\
+
  Specify the nodes that have been discovered by the specified discovery method:
- 
- 
+
+
  \* \ **seq**\  - Sequential discovery (started via nodediscoverstart noderange=<noderange> ...).
- 
- 
- 
+
+
+
  \* \ **profile**\  - Profile discovery (started via nodediscoverstart networkprofile=<network-profile> ...).
- 
- 
- 
+
+
+
  \* \ **switch**\  - Switch-based discovery (used when the switch and switches tables are filled in).
- 
- 
- 
+
+
+
  \* \ **blade**\  - Blade discovery (used for IBM Flex blades).
- 
- 
- 
+
+
+
  \* \ **manual**\  - Manually discovery (used when defining node by nodediscoverdef command).
- 
- 
- 
+
+
+
  \* \ **undef**\  - Display the nodes that were in the discovery pool, but for which xCAT has not yet received a discovery request.
- 
- 
- 
+
+
+
  \* \ **all**\  - All discovered nodes.
- 
- 
- 
 
 
-\ **-n**\  \ *node*\ 
- 
+
+
+
+\ **-n**\  \ *node*\
+
  The xCAT node that the discovery entry will be defined to.
- 
 
 
-\ **-r**\ 
- 
+
+\ **-r**\
+
  Remove the discovery entries from discoverydata table.
- 
 
 
-\ **-u**\  \ *uuid*\ 
- 
+
+\ **-u**\  \ *uuid*\
+
  The uuid of the discovered entry.
- 
 
 
-\ **-h|-**\ **-help**\ 
- 
+
+\ **-h|-**\ **-help**\
+
  Display usage message.
- 
 
 
-\ **-v|-**\ **-version**\ 
- 
+
+\ **-v|-**\ **-version**\
+
  Command version.
- 
+
 
 
 
@@ -139,57 +139,57 @@ EXAMPLES
 
 
 1. Define the discovery entry which uuid is 51E5F2D7-0D59-11E2-A7BC-3440B5BEDBB4 to node node1
- 
- 
+
+
  .. code-block:: perl
- 
+
    nodediscoverdef -u 51E5F2D7-0D59-11E2-A7BC-3440B5BEDBB4 -n node1
- 
- 
+
+
  Output is similar to:
- 
- 
+
+
  .. code-block:: perl
- 
+
    Defined [51E5F2D7-0D59-11E2-A7BC-3440B5BEDBB4] to node node1.
- 
- 
+
+
 
 
 2. Remove the discovery entry which uuid is 51E5F2D7-0D59-11E2-A7BC-3440B5BEDBB4 from the discoverydata table
- 
- 
+
+
  .. code-block:: perl
- 
+
    nodediscoverdef -r -u 51E5F2D7-0D59-11E2-A7BC-3440B5BEDBB4
- 
- 
+
+
  Output is similar to:
- 
- 
+
+
  .. code-block:: perl
- 
+
    Removing discovery entries finished.
- 
- 
+
+
 
 
 3. Remove the discovery entries which discover type is \ **seq**\  from the discoverydata table
- 
- 
+
+
  .. code-block:: perl
- 
+
    nodediscoverdef -r -t seq
- 
- 
+
+
  Output is similar to:
- 
- 
+
+
  .. code-block:: perl
- 
+
    Removing discovery entries finished.
- 
- 
+
+