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-rw-r--r--lib/libc/sys/select.22
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/libc/sys/select.2 b/lib/libc/sys/select.2
index 344adb141e7fb..528645c3184fd 100644
--- a/lib/libc/sys/select.2
+++ b/lib/libc/sys/select.2
@@ -57,6 +57,8 @@ and
to see if some of their descriptors
are ready for reading, are ready for writing, or have an exceptional
condition pending, respectively.
+The only exceptional condition detectable is out-of-band
+data received on a socket.
The first
.Fa nfds
descriptors are checked in each set;