--- libelwix/inc/elwix/apio.h	2020/06/19 13:06:17	1.5
+++ libelwix/inc/elwix/apio.h	2020/06/19 23:07:20	1.6
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: apio.h,v 1.5 2020/06/19 13:06:17 misho Exp $
+* $Id: apio.h,v 1.6 2020/06/19 23:07:20 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -69,6 +69,7 @@ extern pio_pid_t pio_pidlist;
  * @command = command
  * @type = type
  * @ppid = return pid of child program
+ * 	If value of *ppid is -1 when invoke routine then child will be session leader
  * return: NULL error or !=NULL open program
  */
 #ifdef POPEN_STREAM
@@ -82,6 +83,7 @@ int e_popen(const char *command, const char *type, pid
  * @command = command
  * @type = type
  * @ppid = return pid of child program
+ * 	If value of *ppid is -1 when invoke routine then child will be session leader
  * @fds = file descriptor array for close when fork
  * @fdslen = fds number of descriptors
  * return: NULL error or !=NULL open program