1.1 --- a/reference.txt	Sun Jun 04 13:49:12 2017 +0200
     1.2 +++ b/reference.txt	Sun Jun 04 16:40:46 2017 +0200
     1.3 @@ -386,9 +386,19 @@
     1.4  nil, it is treated as being empty.
     1.5  
     1.6  Returns true when at least one file descriptor or handle is ready for reading
     1.7 -or writing respectively. Returns false (plus a notice as second return value)
     1.8 -in case of timeout. Returns nil (plus a notice as second return value) if a
     1.9 -signal was received during waiting.
    1.10 +or writing respectively, or if a signal has been received during waiting.
    1.11 +Returns false (plus a notice as second return value) in case of timeout.
    1.12 +
    1.13 +
    1.14 +### moonbridge_io.signalsocket(signal, ...)
    1.15 +
    1.16 +This function installs a signal handler for the signals with the numbers passed
    1.17 +as arguments and returns a socket which receives a byte for each received
    1.18 +signal.
    1.19 +
    1.20 +Subsequent calls of this function can extend the set of signals but will always
    1.21 +return the same socket. If the socket is closed, it is no longer possible to
    1.22 +detect signals until the process is terminated.
    1.23  
    1.24  
    1.25  ### moonbridge_io.tcpconnect(hostname, port)