This optional parameter allows you to specify the node to start at when
 determining a set of communication paths.

 You may enter either:

     FROM = node-name
     FROM = osi-net
     FROM = osi-area
     FROM = ph4-addr
     FROM = ph4-area

 where:

     node-name   identifies the starting node using either the node's full
                 DECdns name or its Phase IV synonym name.

                 For example ".USA.Boston" or "BOSTON".

     osi-net     identifies the starting node using one of the node's network
                 entity titles (NETs).  This may be entered in the format:

                     afi:idi:predsp-locarea:nodeid:sel

                 For example "43:15084745192:00-0C:aa-00-04-00-50-30:00".

     osi-area    identifies the starting node using one of the node's
                 network areas.  In this case, the first node found in
                 the area becomes the starting node.  This may be entered
                 in the format:

                     afi:idi:predsp-locarea

                 For example "43:15084745192:00-0C".

     ph4-addr    identifies the starting node using the node's Phase IV
                 network address.  This may be entered in the format:

                     area.nodeid

                 For example "12.102".

     ph4-area    identifies the starting node using the node's Phase IV
                 network area.  In this case, the first node found in the
                 area becomes the starting node.  This may be entered in
                 the format:

                     area.*

                 For example "12.*".

 If FROM is not specified, the starting node is assumed to be the local
 node.  If TO is not specified, the terminating node is assumed to be
 the local node.  You must specify at least one of these (they cannot
 both be defaulted).

 Example:  SHOW PATH FROM .USA.BOSTON TO .FR.CANNES
           SHOW PATH FROM 43:15084745192:00-0C:AA-00-04-00-50-30:00