- PROCESS 1 (LEFT) ---------     - PROCESS 2 (RIGHT) -------

     -----------
    | POE:event |
     -----------
        |
        V
     ------------------------
    | Win32::Process::Create |
     ------------------------ \ (1)    -------------------------
        |                      -----> | 1) system( target )  \\ |
        |(2)                          |    2>stdout.txt 2>&1    |
        V                             | 2) print #eof# to       |
     ------------------------         |    stdout.txt           |
    | POE::Wheel::FollowTail |         -------------------------
    | of file stdout.txt     | <---
     ------------------------      |
        |(3)                       |
        V                       no |
     -------------------           |
    | got line #eof# in | ---------
    | stdout.txt        |
     -------------------
        | yes
        V
     -------
    |  end  |
     -------