fixes #286 nng_pair0_open (and all others) need man page

fixes #279 consider restructuring man sections

This represents a rather significant rework, and major editing
effort, for the entire set of manual pages.

All of the pages now have a section number in their filename;
this assists in some other tooling, particularly ebook generation
as every link needs to be programmatically modified when combined
into an ebook.

Section 5 is introduced, and populated with pages for the main
types, and all options are now documented.

Numerous errors have been corrected, including rewriting certain
portions such as the header section of the surveyor protocol.

Much work has been done to facilitate index generation, although
certainly more work remains here.

Every internal link within these pages now resolves; there are no
more dead links.  (This is required to generate Kindle format books.)

1 files changed, 0 insertions, 74 deletions

diff --git a/docs/man/nng_http_conn_write.adoc b/docs/man/nng_http_conn_write.adoc
deleted file mode 100644
index 85df3ed9..00000000
--- a/docs/man/nng_http_conn_write.adoc
+++ /dev/null
@@ -1,74 +0,0 @@
-= nng_http_conn_write(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_http_conn_write - write to HTTP connection
-
-== SYNOPSIS
-
-[source, c]
------------
-#include <nng/nng.h>
-#include <nng/supplemental/http/http.h>
-
-void nng_http_conn_write(nng_http_conn *conn, nng_aio *aio);
------------
-
-== DESCRIPTION
-
-The `nng_http_conn_write()` function starts an asynchronous write to the
-HTTP connection _conn_ from the scatter/gather vector located in the
-asynchronous I/O structure _aio_.
-
-NOTE: The <<nng_aio_set_iov#,nng_aio_set_iov(3)>> function must have been
-called first, to set the scatter/gather vector for _aio_.
-
-This function returns immediately, with no return value.  Completion of
-the operation is signaled via the _aio_, and the final result may be
-obtained via <<nng_aio_result#,nng_aio_result(3)>>. That result will
-either be zero or an error code.
-
-The I/O operation completes as soon as at least one byte has been
-written, or an error has occurred.
-Therefore, the number of bytes written may be less than requested.  The actual
-number of bytes written can be determined with
-<<nng_aio_count#,nng_aio_count(3)>>.
-
-TIP: This function is intended to facilitate uses cases that involve changing
-the protocol from HTTP -- such as WebSocket.  Most applications will never need
-to use this function.
-
-== RETURN VALUES
-
-None.
-
-== ERRORS
-
-`NNG_ECANCELED`:: The operation was canceled.
-`NNG_ECLOSED`:: The connection was closed.
-`NNG_ECONNRESET`:: The peer closed the connection.
-`NNG_EINVAL`:: The _aio_ does not contain a valid scatter/gather vector.
-`NNG_ENOMEM`:: Insufficient free memory to perform the operation.
-`NNG_ENOTSUP`:: HTTP operations are not supported.
-`NNG_ETIMEDOUT`:: Timeout waiting for data from the connection.
-
-== SEE ALSO
-
-<<nng_aio_alloc#,nng_aio_alloc(3)>>,
-<<nng_aio_count#,nng_aio_count(3)>>,
-<<nng_aio_result#,nng_aio_result(3)>>,
-<<nng_aio_set_iov#,nng_aio_set_iov(3)>>,
-<<nng_http_client_connect#,nng_http_client_connect(3)>>,
-<<nng_http_conn_write_all#,nng_http_conn_write_all(3)>>,
-<<nng_http_handler_alloc#,nng_http_handler_alloc(3)>>,
-<<nng_strerror#,nng_strerror(3)>>,
-<<nng#,nng(7)>>