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+= nng_strerror(3)
+//
+// Copyright 2018 Staysail Systems, Inc. <info@staysail.tech>
+// Copyright 2018 Capitar IT Group BV <info@capitar.com>
+//
+// This document is supplied under the terms of the MIT License, a
+// copy of which should be located in the distribution where this
+// file was obtained (LICENSE.txt).  A copy of the license may also be
+// found online at https://opensource.org/licenses/MIT.
+//
+
+== NAME
+
+nng_strerror - return an error description
+
+== SYNOPSIS
+
+[source, c]
+-----------
+#include <nng/nng.h>
+
+const char * nng_strerror(int err);
+-----------
+
+== DESCRIPTION
+
+The `nng_strerror()` returns the human-readable description of the
+given _nng_ error in `err`.
+
+NOTE: The returned error message is provided in US English, but in the
+future locale-specific strings may be presented instead.
+
+NOTE: The specific strings associated with specific error messages are
+subject to change.  Therefore applications must not depend on the message,
+but may use them verbatim when supplying information to end-users, such
+as in diagnostic messages or log entries.
+
+== RETURN VALUES
+
+This function returns the human-readable error message, terminated
+by a `NUL` byte.
+
+== SEE ALSO
+
+<<libnng#,libnng(3)>>,
+<<nng#,nng(7)>>