16.7 Using nodelist flags

     When you specify system LISTs to a route command, you can use
     nodelist flags in place of address information. Most of the
     available mail and system related nodelist flags are supported by
     FD. You can mix flags and address information as you wish. A few
     follows:

         HST CM          All systems with HST or CM in their nodelist
                         entry.

         !HST            All systems that do not have HST in their
                         nodelist entry. The ! character negates the
                         meaning of a flag.

         !HST !CM        All systems that do not have HST _or_ CM in
                         their nodelist entry.

         !HST CSP        All systems that do not have HST in their
                         nodelist entry and all systems that have CSP
                         in their nodelist entry.

         1:1/101 HST CM  1:1/101 and all other systems with HST or CM
                         in their nodelist entry.