       TRN is a utility that will rename all of the tasks running from
       your terminal, so that you can have more than one version of a
       task active at one time.

       EXAMPLE: If you enter the following commands at your terminal,

              F4P MOD1=MOD1
              TRN
              F4P MOD2=MOD2

       you can have two copies of the FORTRAN compiler running at one time.
