1.1 --- a/reference.txt	Sat Jun 17 20:07:03 2017 +0200
     1.2 +++ b/reference.txt	Sat Jun 17 22:35:44 2017 +0200
     1.3 @@ -310,7 +310,7 @@
     1.4  
     1.5  ### moonbridge_io.exec(command, arg1, arg2, ...)
     1.6  
     1.7 -Executes the given command and returns a handle with three sockets named
     1.8 +Executes the given command and returns a child handle with three sockets named
     1.9  "stdin", "stdout", and "stderr" as well as the following methods:
    1.10  
    1.11  - :kill(signal)
    1.12 @@ -335,6 +335,9 @@
    1.13  
    1.14  The method :wait_yield() is an alias for :wait_call(coroutine.yield).
    1.15  
    1.16 +It is possible to wait for process termination by including the child handle
    1.17 +in the input_set of the moonbridge_io.poll(...) call.
    1.18 +
    1.19  moonbridge_io.exec(...) returns nil (as first return value) plus an error
    1.20  message (as second return value) in case of error.
    1.21  
    1.22 @@ -399,6 +402,9 @@
    1.23  which does evaluate to true, e.g. input_set = {[socketA] = true}. If a set is
    1.24  nil, it is treated as being empty.
    1.25  
    1.26 +The input_set may also contain listeners (to wait for incoming connections) and
    1.27 +child handles (to wait for process termination).
    1.28 +
    1.29  If the 4th parameter (wakeup_on_sigterm) is set to true, then the function
    1.30  returns immediately if the process received at least one SIGTERM signal after
    1.31  moonbridge_io.catch_sigterm() has been called for the first time. Three values