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-rw-r--r--docs/man/nng_close.3.adoc2
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diff --git a/docs/man/nng_close.3.adoc b/docs/man/nng_close.3.adoc
index e1753dc3..d7a5a11d 100644
--- a/docs/man/nng_close.3.adoc
+++ b/docs/man/nng_close.3.adoc
@@ -40,10 +40,12 @@ This function returns 0 on success, and non-zero otherwise.
== ERRORS
+[horizontal]
`NNG_ECLOSED`:: The socket _s_ is already closed or was never opened.
== SEE ALSO
+[.text-left]
<<nng_strerror.3#,nng_strerror(3)>>,
<<nng_options.5#,nng_options(5)>>,
<<nng_socket.5#,nng_socket(5)>>,