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-rw-r--r--include/zmq.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/zmq.h b/include/zmq.h
index 9745adf..6cdf68f 100644
--- a/include/zmq.h
+++ b/include/zmq.h
@@ -169,6 +169,7 @@ ZMQ_EXPORT int zmq_term (void *context);
/* Socket options. */
#define ZMQ_HWM 1
+/* TODO: LWM is obsolete and should be removed in next version. */
#define ZMQ_LWM 2
#define ZMQ_SWAP 3
#define ZMQ_AFFINITY 4