added network and ip addresses to man page

sudo.man

@@ -49,7 +49,7 @@ host alias section format:
 
       Host_Alias ::= a keyword.
        HOSTALIAS ::= an upper-case alias name.
-       host-list ::= a comma separated list of hosts.
+       host-list ::= a comma separated list of hosts/addresses/networks.
 
 command alias section format:
   Cmnd_Alias CMNDALIAS = cmnd-list
@@ -72,8 +72,9 @@ Examples
     # Host alias specification
     Host_Alias  HUB=houdini.rootgroup.com:\\
                 REMOTE=merlin,kodiakthorn,spirit
-    Host_Alias  MACHINES=kalkan,alpo,milkbones
+    Host_Alias  MACHINES=kalkan,alpo,milkbones,128.138.199.1
     Host_Alias  SERVERS=houdini,merlin,kodiakthorn,spirit
+    Host_Alias  CSNETS=128.138.243.0,128.138.204.0,128.138.242.0
 
     # Command alias specification
     Cmnd_Alias  LPCS=/usr/etc/lpc,/usr/ucb/lprm
@@ -91,11 +92,11 @@ Examples
     billp       ALL=/usr/local/bin/top:MACHINES=SHELLS
     davehieb    merlin=ALL:SERVERS=/etc/halt:\\
                 kodiakthorn=ALL
-    steve       ALL=/usr/su_commands/
+    steve       CSNETS=/usr/su_commands/
 
 The above
 .I sudoers
-file specification is composed of 4 host alias specifications, 4
+file specification is composed of 4 host alias specifications, 3
 command alias specifications and 8 user specifications.  Britt is
 permitted to execute /etc/halt, /etc/shutdown, /usr/etc/lpc and
 /usr/ucb/lprm on the REMOTE machines (merlin, kodiakthorn, and
@@ -104,7 +105,7 @@ of SHELL commands on any machine.  Jill is permitted to execute
 /etc/shutdown, /bin/rm, and /bin/cat on houdini.  Davehieb can execute
 any command on machines merlin and kodiakthorn and can halt the
 SERVERS.  Steve can run any command located in the directory
-/usr/su_commands on all machines.
+/usr/su_commands on all machines on the subnets listed in OURNETS.
 
 The
 .I sudoers