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+= nng_aio_set_input(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_aio_set_input - set input parameter
+
+== SYNOPSIS
+
+[source, c]
+-----------
+#include <nng/nng.h>
+
+void nng_aio_set_input(nng_aio *aio, unsigned int index, void *param);
+-----------
+
+== DESCRIPTION
+
+The `nng_aio_set_input()` function sets the input parameter at _index_ 
+to _param_ for the asynchronous operation associated with _aio_.
+
+The type and semantics of input parameters are determined by specific
+operations; the caller must supply appropriate inputs for the operation
+to be performed.
+
+The valid values of _index_ range from zero (0) to three (3), as no operation
+currently defined can accept more than four parameters.  (This limit could
+increase in the future.)
+
+NOTE: If the _index_ does not correspond to a defined input for the operation,
+then this function will have no effect.  Note that attempts to set
+parameters with an _index_ greater than three (3) will simply be ignored.
+
+CAUTION: It is an error to call this function while the _aio_ is currently
+in use by an active asynchronous operation.
+
+An input parameter set with this function may be retrieved later with
+the <<nng_aio_get_input#,nng_aio_get_input(3)>> function.
+
+== RETURN VALUES
+
+None.
+
+== ERRORS
+
+None.
+
+== SEE ALSO
+
+<<nng_aio_alloc#,nng_aio_alloc(3)>>,
+<<nng_aio_get_input#,nng_aio_get_input(3)>>,
+<<nng_aio_get_output#,nng_aio_get_output(3)>>,
+<<nng_aio_result#,nng_aio_result(3)>>,
+<<nng#,nng(7)>>