+.TP
+.B ENOSYS
+.BR aio_return ()
+is not implemented.
+.SH VERSIONS
+The
+.BR aio_return ()
+function is available since glibc 2.1.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lb lb lb
+l l l.
+Interface Attribute Value
+T{
+.BR aio_return ()
+T} Thread safety MT-Safe
+.TE
+.SH CONFORMING TO
+POSIX.1-2001, POSIX.1-2008.
+.SH EXAMPLE
+See
+.BR aio (7).
+.SH SEE ALSO