From 7aa04924224123d8ea191e17fff78b033649f335 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Fri, 17 Jun 2005 14:07:17 -0400
Subject: [PATCH] ENH: Added polling feature to documentation of WaitForData.

---
 Source/kwsys/Process.h.in | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Source/kwsys/Process.h.in b/Source/kwsys/Process.h.in
index bd61086d0..26779d7b9 100644
--- a/Source/kwsys/Process.h.in
+++ b/Source/kwsys/Process.h.in
@@ -267,7 +267,9 @@ kwsysEXPORT void kwsysProcess_Disown(kwsysProcess* cp);
  *            return after reading data, the time elapsed is subtracted
  *            from the timeout value.  If this timeout expires, the
  *            value is set to 0.  A NULL pointer passed for this argument
- *            indicates no timeout for the call.
+ *            indicates no timeout for the call.  A negative or zero
+ *            value passed for this argument may be used for polling
+ *            and will always return immediately.
  *
  * Return value will be one of:
  *