Finished the nng_msg_ pages

27 files changed, 519 insertions, 723 deletions

diff --git a/docs/reference/src/SUMMARY.md b/docs/reference/src/SUMMARY.md
index 81d2f24c..aa705d44 100644
--- a/docs/reference/src/SUMMARY.md
+++ b/docs/reference/src/SUMMARY.md
@@ -29,6 +29,19 @@
     - [nng_msg_clear](api/msg/nng_msg_clear.md)
     - [nng_msg_dup](api/msg/nng_msg_dup.md)
     - [nng_msg_free](api/msg/nng_msg_free.md)
+    - [nng_msg_get_pipe](api/msg/nng_msg_get_pipe.md)
+    - [nng_msg_header](api/msg/nng_msg_header.md)
+    - [nng_msg_header_append](api/msg/nng_msg_header_append.md)
+    - [nng_msg_header_chop](api/msg/nng_msg_header_chop.md)
+    - [nng_msg_header_clear](api/msg/nng_msg_header_clear.md)
+    - [nng_msg_header_insert](api/msg/nng_msg_header_insert.md)
+    - [nng_msg_header_len](api/msg/nng_msg_header_len.md)
+    - [nng_msg_header_trim](api/msg/nng_msg_header_trim.md)
+    - [nng_msg_insert](api/msg/nng_msg_insert.md)
+    - [nng_msg_len](api/msg/nng_msg_len.md)
+    - [nng_msg_realloc](api/msg/nng_msg_realloc.md)
+    - [nng_msg_reserve](api/msg/nng_msg_reserve.md)
+    - [nng_msg_set_pipe](api/msg/nng_msg_set_pipe.md)
     - [nng_msg_trim](api/msg/nng_msg_trim.md)
 
   - [Sockets](api/socket/index.md)
diff --git a/docs/reference/src/api/msg/nng_msg_get_pipe.3.adoc b/docs/reference/src/api/msg/nng_msg_get_pipe.3.adoc
deleted file mode 100644
index 154f4c43..00000000
--- a/docs/reference/src/api/msg/nng_msg_get_pipe.3.adoc
+++ /dev/null
@@ -1,60 +0,0 @@
-= nng_msg_get_pipe(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_msg_get_pipe - get pipe for message
-
-== SYNOPSIS
-
-[source, c]
-----
-#include <nng/nng.h>
-
-nng_pipe nng_msg_get_pipe(nng_msg *msg);
-----
-
-== DESCRIPTION
-
-The `nng_msg_get_pipe()` returns the xref:nng_pipe.5.adoc[`nng_pipe`] object
-associated with message _msg_.
-On receive, this is the pipe from which a message was received.
-On transmit, this would be the pipe that the message should be delivered
-to, if a specific peer is required.
-
-NOTE: Not all protocols support overriding the destination pipe.
-
-The most usual use case for this is to obtain information about the peer
-from which the message was received.
-This can be used to provide different behaviors for different peers, such as
-a higher level of authentication for peers located on an untrusted network.
-The xref:nng_pipe_getopt.3.adoc[`nng_pipe_getopt()`] function
-is useful in this situation.
-
-
-== RETURN VALUES
-
-This function returns the pipe associated with this message, which will
-be a positive value.
-If the pipe is non-positive, then that indicates that
-no specific pipe is associated with the message.
-
-== ERRORS
-
-None.
-
-== SEE ALSO
-
-[.text-left]
-xref:nng_msg_alloc.3.adoc[nng_msg_alloc(3)],
-xref:nng_msg_set_pipe.3.adoc[nng_msg_set_pipe(3)],
-xref:nng_pipe_getopt.3.adoc[nng_pipe_getopt(3)],
-xref:nng.7.adoc[nng(7)]
diff --git a/docs/reference/src/api/msg/nng_msg_get_pipe.md b/docs/reference/src/api/msg/nng_msg_get_pipe.md
new file mode 100644
index 00000000..5f935347
--- /dev/null
+++ b/docs/reference/src/api/msg/nng_msg_get_pipe.md
@@ -0,0 +1,44 @@
+# nng_msg_get_pipe
+
+## NAME
+
+nng_msg_get_pipe --- get pipe for message
+
+## SYNOPSIS
+
+```c
+#include <nng/nng.h>
+
+nng_pipe nng_msg_get_pipe(nng_msg *msg);
+```
+
+## DESCRIPTION
+
+The `nng_msg_get_pipe()` returns the [`nng_pipe`](../conn/nng_pipe.md) object
+associated with message _msg_.
+On receive, this is the pipe from which a message was received.
+On transmit, this would be the pipe that the message should be delivered
+to, if a specific peer is required.
+
+> [!NOTE]
+> Not all protocols support overriding the destination pipe.
+
+The most usual use case for this is to obtain information about the peer
+from which the message was received.
+This can be used to provide different behaviors for different peers, such as
+a higher level of authentication for peers located on an untrusted network.
+The [`nng_pipe_get()`](../conn/nng_pipe_get.md) function
+is useful in this situation.
+
+## RETURN VALUES
+
+This function returns the pipe associated with this message, which will
+be a positive value.
+If the pipe is non-positive, then that indicates that
+no specific pipe is associated with the message.
+
+## SEE ALSO
+
+[nng_msg_alloc](nng_msg_alloc.md),
+[nng_msg_set_pipe](nng_msg_set_pipe.md),
+[nng_pipe_get](../conn/nng_pipe_get.md)
diff --git a/docs/reference/src/api/msg/nng_msg_header.3.adoc b/docs/reference/src/api/msg/nng_msg_header.3.adoc
deleted file mode 100644
index eac45ffd..00000000
--- a/docs/reference/src/api/msg/nng_msg_header.3.adoc
+++ /dev/null
@@ -1,58 +0,0 @@
-= nng_msg_header(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_msg_header - return message header
-
-== SYNOPSIS
-
-[source, c]
-----
-#include <nng/nng.h>
-
-void *nng_msg_header(nng_msg *msg);
-----
-
-== DESCRIPTION
-
-The `nng_msg_header()` function returns a pointer to the start of the header
-content of the message _msg_.
-
-NOTE: The message header contains protocol-specific header content.  Most
-applications should not need to access this content, but it is available
-for raw mode sockets (set with the
-xref:nng_options.5.adoc#NNG_OPT_RAW[`NNG_OPT_RAW`] option.)
-
-NOTE: The value returned by this is invalidated by a call to any of the
-functions that modify the message or the header content.
-
-== RETURN VALUES
-
-Pointer to start of message header.
-
-== ERRORS
-
-None.
-
-== SEE ALSO
-
-[.text-left]
-xref:nng_msg_alloc.3.adoc[nng_msg_alloc(3)],
-xref:nng_msg_body.3.adoc[nng_msg_body(3)],
-xref:nng_msg_free.3.adoc[nng_msg_free(3)],
-xref:nng_msg_header_append.3.adoc[nng_msg_header_append(3)],
-xref:nng_msg_header_chop.3.adoc[nng_msg_header_chop(3)],
-xref:nng_msg_header_insert.3.adoc[nng_msg_header_insert(3)]
-xref:nng_msg_header_len.3.adoc[nng_msg_header_len(3)],
-xref:nng_msg_header_trim.3.adoc[nng_msg_header_trim(3)],
-xref:nng_msg.5.adoc[nng_msg(5)],
-xref:nng.7.adoc[nng(7)]
diff --git a/docs/reference/src/api/msg/nng_msg_header.md b/docs/reference/src/api/msg/nng_msg_header.md
new file mode 100644
index 00000000..7a75464d
--- /dev/null
+++ b/docs/reference/src/api/msg/nng_msg_header.md
@@ -0,0 +1,42 @@
+# nng_msg_header
+
+## NAME
+
+nng_msg_header --- return message header
+
+## SYNOPSIS
+
+```c
+#include <nng/nng.h>
+
+void *nng_msg_header(nng_msg *msg);
+```
+
+## DESCRIPTION
+
+The `nng_msg_header()` function returns a pointer to the start of the header
+content of the message _msg_.
+
+> [!NOTE]
+> The message header contains protocol-specific header content. Most
+> applications should not need to access this content, but it is available
+> for [raw](../../overview/raw.md) mode sockets.
+
+> [!NOTE]
+> The value returned by this is invalidated by a call to any of the
+> functions that modify the message or the header content.
+
+## RETURN VALUES
+
+Pointer to start of message header.
+
+## SEE ALSO
+
+[nng_msg_alloc](nng_msg_alloc.md),
+[nng_msg_body](nng_msg_body.md),
+[nng_msg_free](nng_msg_free.md),
+[nng_msg_header_append](nng_msg_header_append.md),
+[nng_msg_header_chop](nng_msg_header_chop.md),
+[nng_msg_header_insert](nng_msg_header_insert.md)
+[nng_msg_header_len](nng_msg_header_len.md),
+[nng_msg_header_trim](nng_msg_header_trim.md)
diff --git a/docs/reference/src/api/msg/nng_msg_header_append.3.adoc b/docs/reference/src/api/msg/nng_msg_header_append.3.adoc
deleted file mode 100644
index 16badf0b..00000000
--- a/docs/reference/src/api/msg/nng_msg_header_append.3.adoc
+++ /dev/null
@@ -1,58 +0,0 @@
-= nng_msg_header_append(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_msg_header_append - append to message header
-
-== SYNOPSIS
-
-[source, c]
-----
-#include <nng/nng.h>
-
-int nng_msg_header_append(nng_msg *msg, const void *val, size_t size);
-int nng_msg_header_append_u16(nng_msg *msg, uint16_t val16);
-int nng_msg_header_append_u32(nng_msg *msg, uint32_t val32);
-int nng_msg_header_append_u64(nng_msg *msg, uint64_t val64);
-----
-
-== DESCRIPTION
-
-The `nng_msg_header_append()` family of functions appends data to
-the end of the headers of message _msg_, reallocating it if necessary.
-The first function appends _size_ bytes, copying them from _val_.
-
-The remaining functions append the value (such as _val32_) in
-network-byte order (big-endian).
-
-
-== RETURN VALUES
-
-These functions return 0 on success, and non-zero otherwise.
-
-== ERRORS
-
-[horizontal]
-`NNG_ENOMEM`:: Insufficient free memory exists.
-
-== SEE ALSO
-
-[.text-left]
-xref:nng_msg_alloc.3.adoc[nng_msg_alloc(3)],
-xref:nng_msg_header.3.adoc[nng_msg_header(3)],
-xref:nng_msg_header_chop.3.adoc[nng_msg_header_chop(3)],
-xref:nng_msg_header_insert.3.adoc[nng_msg_header_insert(3)],
-xref:nng_msg_header_len.3.adoc[nng_msg_header_len(3)],
-xref:nng_msg_header_trim.3.adoc[nng_msg_header_trim(3)],
-xref:nng_msg_free.3.adoc[nng_msg_free(3)],
-xref:nng_strerror.3.adoc[nng_strerror(3)],
-xref:nng.7.adoc[nng(7)]
diff --git a/docs/reference/src/api/msg/nng_msg_header_append.md b/docs/reference/src/api/msg/nng_msg_header_append.md
new file mode 100644
index 00000000..f87649a5
--- /dev/null
+++ b/docs/reference/src/api/msg/nng_msg_header_append.md
@@ -0,0 +1,41 @@
+# nng_msg_header_append
+
+## NAME
+
+nng_msg_header_append --- append to message header
+
+## SYNOPSIS
+
+```c
+#include <nng/nng.h>
+
+int nng_msg_header_append(nng_msg *msg, const void *val, size_t size);
+int nng_msg_header_append_u16(nng_msg *msg, uint16_t val16);
+int nng_msg_header_append_u32(nng_msg *msg, uint32_t val32);
+int nng_msg_header_append_u64(nng_msg *msg, uint64_t val64);
+```
+
+## DESCRIPTION
+
+The `nng_msg_header_append()` family of functions appends data to
+the end of the headers of message _msg_, reallocating it if necessary.
+The first function appends _size_ bytes, copying them from _val_.
+
+The remaining functions append the value (such as _val32_) in
+network-byte order (big-endian).
+
+## RETURN VALUES
+
+These functions return 0 on success, and non-zero otherwise.
+
+## ERRORS
+
+- `NNG_ENOMEM`: Insufficient free memory exists.
+
+## SEE ALSO
+
+[nng_msg_header](nng_msg_body.md),
+[nng_msg_header_chop](nng_msg_header_chop.md),
+[nng_msg_header_insert](nng_msg_header_insert.md)
+[nng_msg_header_len](nng_msg_header_len.md),
+[nng_msg_header_trim](nng_msg_header_trim.md)
diff --git a/docs/reference/src/api/msg/nng_msg_header_chop.3.adoc b/docs/reference/src/api/msg/nng_msg_header_chop.3.adoc
deleted file mode 100644
index 454e9e51..00000000
--- a/docs/reference/src/api/msg/nng_msg_header_chop.3.adoc
+++ /dev/null
@@ -1,58 +0,0 @@
-= nng_msg_header_chop(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_msg_header_chop - remove data from end of message header
-
-== SYNOPSIS
-
-[source, c]
-----
-#include <nng/nng.h>
-
-int nng_msg_header_chop(nng_msg *msg, size_t size);
-int nng_msg_header_chop_u16(nng_msg *msg, uint16_t *val16);
-int nng_msg_header_chop_u32(nng_msg *msg, uint32_t *val32);
-int nng_msg_header_chop_u64(nng_msg *msg, uint64_t *val64);
-----
-
-== DESCRIPTION
-
-The `nng_msg_header_chop()` family of functions removes
-data from the end of the header of message _msg_.
-The first function removes _size_ bytes.
-The remaining functions remove 2, 4, or 8 bytes, and stores them in the value
-(such as _val32_),
-after converting them from network-byte order (big-endian) to native
-byte order.
-
-== RETURN VALUES
-
-These function return 0 on success, and non-zero otherwise.
-
-== ERRORS
-
-[horizontal]
-`NNG_EINVAL`:: The message header is too short to remove the requested data.
-
-== SEE ALSO
-
-[.text-left]
-xref:nng_msg_alloc.3.adoc[nng_msg_alloc(3)],
-xref:nng_msg_header.3.adoc[nng_msg_header(3)],
-xref:nng_msg_header_append.3.adoc[nng_msg_header_append(3)],
-xref:nng_msg_header_insert.3.adoc[nng_msg_header_insert(3)],
-xref:nng_msg_header_len.3.adoc[nng_msg_header_len(3)],
-xref:nng_msg_header_trim.3.adoc[nng_msg_header_trim(3)],
-xref:nng_msg_free.3.adoc[nng_msg_free(3)],
-xref:nng_strerror.3.adoc[nng_strerror(3)],
-xref:nng.7.adoc[nng(7)]
diff --git a/docs/reference/src/api/msg/nng_msg_header_chop.md b/docs/reference/src/api/msg/nng_msg_header_chop.md
new file mode 100644
index 00000000..9419d88f
--- /dev/null
+++ b/docs/reference/src/api/msg/nng_msg_header_chop.md
@@ -0,0 +1,42 @@
+# nng_msg_header_chop
+
+## NAME
+
+nng_msg_header_chop --- remove data from end of message header
+
+## SYNOPSIS
+
+```c
+#include <nng/nng.h>
+
+int nng_msg_header_chop(nng_msg *msg, size_t size);
+int nng_msg_header_chop_u16(nng_msg *msg, uint16_t *val16);
+int nng_msg_header_chop_u32(nng_msg *msg, uint32_t *val32);
+int nng_msg_header_chop_u64(nng_msg *msg, uint64_t *val64);
+```
+
+## DESCRIPTION
+
+The `nng_msg_header_chop()` family of functions removes
+data from the end of the header of message _msg_.
+The first function removes _size_ bytes.
+The remaining functions remove 2, 4, or 8 bytes, and stores them in the value
+(such as _val32_),
+after converting them from network-byte order (big-endian) to native
+byte order.
+
+## RETURN VALUES
+
+These function return 0 on success, and non-zero otherwise.
+
+## ERRORS
+
+- `NNG_EINVAL`: The message header is too short to remove the requested data.
+
+## SEE ALSO
+
+[nng_msg_header](nng_msg_body.md),
+[nng_msg_header_append](nng_msg_header_append.md),
+[nng_msg_header_insert](nng_msg_header_insert.md)
+[nng_msg_header_len](nng_msg_header_len.md),
+[nng_msg_header_trim](nng_msg_header_trim.md)
diff --git a/docs/reference/src/api/msg/nng_msg_header_clear.3.adoc b/docs/reference/src/api/msg/nng_msg_header_clear.3.adoc
deleted file mode 100644
index d00286ed..00000000
--- a/docs/reference/src/api/msg/nng_msg_header_clear.3.adoc
+++ /dev/null
@@ -1,42 +0,0 @@
-= nng_msg_header_clear(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_msg_header_clear - clear message header
-
-== SYNOPSIS
-
-[source, c]
-----
-#include <nng/nng.h>
-
-void nng_msg_header_clear(nng_msg *msg);
-----
-
-== DESCRIPTION
-
-The `nng_msg_clear()` function resets the header length of _msg_ to zero.
-
-== RETURN VALUES
-
-None.
-
-== ERRORS
-
-None.
-
-== SEE ALSO
-
-[.text-left]
-xref:nng_msg_alloc.3.adoc[nng_msg_alloc(3)],
-xref:nng_msg_free.3.adoc[nng_msg_free(3)],
-xref:nng.7.adoc[nng(7)]
diff --git a/docs/reference/src/api/msg/nng_msg_header_clear.md b/docs/reference/src/api/msg/nng_msg_header_clear.md
new file mode 100644
index 00000000..7f3b8387
--- /dev/null
+++ b/docs/reference/src/api/msg/nng_msg_header_clear.md
@@ -0,0 +1,22 @@
+# nng_msg_header_clear
+
+## NAME
+
+nng_msg_header_clear --- clear message header
+
+## SYNOPSIS
+
+```c
+#include <nng/nng.h>
+
+void nng_msg_header_clear(nng_msg *msg);
+```
+
+## DESCRIPTION
+
+The `nng_msg_clear()` function resets the header length of _msg_ to zero.
+
+## SEE ALSO
+
+[nng_msg_header](nng_msg_header.md),
+[nng_msg_header_len](nng_msg_header_len.md)
diff --git a/docs/reference/src/api/msg/nng_msg_header_insert.3.adoc b/docs/reference/src/api/msg/nng_msg_header_insert.3.adoc
deleted file mode 100644
index a2bf0d63..00000000
--- a/docs/reference/src/api/msg/nng_msg_header_insert.3.adoc
+++ /dev/null
@@ -1,60 +0,0 @@
-= nng_msg_header_insert(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_msg_header_insert - prepend to message header
-
-== SYNOPSIS
-
-[source, c]
-----
-#include <nng/nng.h>
-
-int nng_msg_header_insert(nng_msg *msg, const void *val, size_t size);
-int nng_msg_header_insert_u16(nng_msg *msg, uint16_t val16);
-int nng_msg_header_insert_u32(nng_msg *msg, uint32_t val32);
-int nng_msg_header_insert_u64(nng_msg *msg, uint64_t val64);
-----
-
-== DESCRIPTION
-
-The `nng_msg_header_insert()` family of functions
-prepends data to the front of the headers of message _msg_, reallocating
-if necessary.
-The first function prepends _size_ bytes, copying them from _val_.
-The remaining functions prepend the specified value (such as _val32_) in
-network-byte order (big-endian).
-
-== RETURN VALUES
-
-These functions return 0 on success, and non-zero otherwise.
-
-== ERRORS
-
-[horizontal]
-`NNG_ENOMEM`:: Insufficient free memory exists.
-
-== SEE ALSO
-
-[.text-left]
-xref:nng_msg_alloc.3.adoc[nng_msg_alloc(3)],
-xref:nng_msg_header.3.adoc[nng_msg_header(3)],
-xref:nng_msg_header_append.3.adoc[nng_msg_header_append(3)],
-xref:nng_msg_header_chop.3.adoc[nng_msg_header_chop(3)],
-xref:nng_msg_header_len.3.adoc[nng_msg_header_len(3)],
-xref:nng_msg_header_trim.3.adoc[nng_msg_header_trim(3)],
-xref:nng_msg_free.3.adoc[nng_msg_free(3)],
-xref:nng_msg_capacity.3.adoc[nng_msg_capacity(3)],
-xref:nng_msg_reserve.3.adoc[nng_msg_reserve(3)],
-xref:nng_msg_realloc.3.adoc[nng_msg_realloc(3)],
-xref:nng_strerror.3.adoc[nng_strerror(3)],
-xref:nng.7.adoc[nng(7)]
diff --git a/docs/reference/src/api/msg/nng_msg_header_insert.md b/docs/reference/src/api/msg/nng_msg_header_insert.md
new file mode 100644
index 00000000..07124fd9
--- /dev/null
+++ b/docs/reference/src/api/msg/nng_msg_header_insert.md
@@ -0,0 +1,41 @@
+# nng_msg_header_insert
+
+## NAME
+
+nng_msg_header_insert --- prepend to message header
+
+## SYNOPSIS
+
+```c
+#include <nng/nng.h>
+
+int nng_msg_header_insert(nng_msg *msg, const void *val, size_t size);
+int nng_msg_header_insert_u16(nng_msg *msg, uint16_t val16);
+int nng_msg_header_insert_u32(nng_msg *msg, uint32_t val32);
+int nng_msg_header_insert_u64(nng_msg *msg, uint64_t val64);
+```
+
+## DESCRIPTION
+
+The `nng_msg_header_insert()` family of functions
+prepends data to the front of the headers of message _msg_, reallocating
+if necessary.
+The first function prepends _size_ bytes, copying them from _val_.
+The remaining functions prepend the specified value (such as _val32_) in
+network-byte order (big-endian).
+
+## RETURN VALUES
+
+These functions return 0 on success, and non-zero otherwise.
+
+## ERRORS
+
+- `NNG_ENOMEM`: Insufficient free memory exists.
+
+## SEE ALSO
+
+[nng_msg_header](nng_msg_body.md),
+[nng_msg_header_append](nng_msg_header_append.md)
+[nng_msg_header_chop](nng_msg_header_chop.md),
+[nng_msg_header_len](nng_msg_header_len.md),
+[nng_msg_header_trim](nng_msg_header_trim.md)
diff --git a/docs/reference/src/api/msg/nng_msg_header_len.3.adoc b/docs/reference/src/api/msg/nng_msg_header_len.3.adoc
deleted file mode 100644
index 0a7b3613..00000000
--- a/docs/reference/src/api/msg/nng_msg_header_len.3.adoc
+++ /dev/null
@@ -1,43 +0,0 @@
-= nng_msg_header_len(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_msg_header_len - return message header length
-
-== SYNOPSIS
-
-[source, c]
-----
-#include <nng/nng.h>
-
-size_t nng_msg_header_len(nng_msg *msg);
-----
-
-== DESCRIPTION
-
-The `nng_msg_header_len()` returns the length of message header of _msg_.
-
-== RETURN VALUES
-
-Length of message header.
-
-== ERRORS
-
-None.
-
-== SEE ALSO
-
-[.text-left]
-xref:nng_msg_alloc.3.adoc[nng_msg_alloc(3)],
-xref:nng_msg_header.3.adoc[nng_msg_header(3)],
-xref:nng_msg.5.adoc[nng_msg(5)],
-xref:nng.7.adoc[nng(7)]
diff --git a/docs/reference/src/api/msg/nng_msg_header_len.md b/docs/reference/src/api/msg/nng_msg_header_len.md
new file mode 100644
index 00000000..51bbf537
--- /dev/null
+++ b/docs/reference/src/api/msg/nng_msg_header_len.md
@@ -0,0 +1,25 @@
+# nng_msg_header_len
+
+## NAME
+
+nng_msg_header_len --- return message header length
+
+## SYNOPSIS
+
+```c
+#include <nng/nng.h>
+
+size_t nng_msg_header_len(nng_msg *msg);
+```
+
+## DESCRIPTION
+
+The `nng_msg_header_len()` returns the length of message header of _msg_.
+
+## RETURN VALUES
+
+Length of message header.
+
+## SEE ALSO
+
+[nng_msg_header](nng_msg_header)
diff --git a/docs/reference/src/api/msg/nng_msg_header_trim.3.adoc b/docs/reference/src/api/msg/nng_msg_header_trim.3.adoc
deleted file mode 100644
index 6df504ff..00000000
--- a/docs/reference/src/api/msg/nng_msg_header_trim.3.adoc
+++ /dev/null
@@ -1,59 +0,0 @@
-= nng_msg_header_trim(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_msg_header_trim - remove data from start of message header
-
-== SYNOPSIS
-
-[source, c]
-----
-#include <nng/nng.h>
-
-int nng_msg_header_trim(nng_msg *msg, size_t size);
-int nng_msg_header_trim_u16(nng_msg *msg, uint16_t *val16);
-int nng_msg_header_trim_u32(nng_msg *msg, uint32_t *val32);
-int nng_msg_header_trim_u64(nng_msg *msg, uint64_t *val64);
-----
-
-== DESCRIPTION
-
-The `nng_msg_header_trim()` family of functions remove
-data from the start of the header of message _msg_.
-The first function removes _size_ bytes.
-The remaining functions removes 2, 4, or 8 bytes, and stores them in the
-value (such as _val32_),
-after converting them from network-byte order (big-endian) to native
-byte order.
-
-== RETURN VALUES
-
-This function returns 0 on success, and non-zero otherwise.
-
-== ERRORS
-
-[horizontal]
-`NNG_EINVAL`:: The message header is too short to remove the requested data.
-
-== SEE ALSO
-
-[.text-left]
-xref:nng_msg_alloc.3.adoc[nng_msg_alloc(3)],
-xref:nng_msg_header.3.adoc[nng_msg_header(3)],
-xref:nng_msg_header_append.3.adoc[nng_msg_header_append(3)],
-xref:nng_msg_header_chop.3.adoc[nng_msg_header_chop(3)],
-xref:nng_msg_header_insert.3.adoc[nng_msg_header_insert(3)],
-xref:nng_msg_header_len.3.adoc[nng_msg_header_len(3)],
-xref:nng_msg_free.3.adoc[nng_msg_free(3)],
-xref:nng_strerror.3.adoc[nng_strerror(3)],
-xref:nng_msg.5.adoc[nng_msg(5)],
-xref:nng.7.adoc[nng(7)]
diff --git a/docs/reference/src/api/msg/nng_msg_header_trim.md b/docs/reference/src/api/msg/nng_msg_header_trim.md
new file mode 100644
index 00000000..ef596dbc
--- /dev/null
+++ b/docs/reference/src/api/msg/nng_msg_header_trim.md
@@ -0,0 +1,42 @@
+# nng_msg_header_trim
+
+## NAME
+
+nng_msg_header_trim --- remove data from start of message header
+
+## SYNOPSIS
+
+```c
+#include <nng/nng.h>
+
+int nng_msg_header_trim(nng_msg *msg, size_t size);
+int nng_msg_header_trim_u16(nng_msg *msg, uint16_t *val16);
+int nng_msg_header_trim_u32(nng_msg *msg, uint32_t *val32);
+int nng_msg_header_trim_u64(nng_msg *msg, uint64_t *val64);
+```
+
+## DESCRIPTION
+
+The `nng_msg_header_trim()` family of functions remove
+data from the start of the header of message _msg_.
+The first function removes _size_ bytes.
+The remaining functions removes 2, 4, or 8 bytes, and stores them in the
+value (such as _val32_),
+after converting them from network-byte order (big-endian) to native
+byte order.
+
+## RETURN VALUES
+
+This function returns 0 on success, and non-zero otherwise.
+
+## ERRORS
+
+- `NNG_EINVAL`: The message header is too short to remove the requested data.
+
+## SEE ALSO
+
+[nng_msg_header](nng_msg_body.md),
+[nng_msg_header_append](nng_msg_header_append.md),
+[nng_msg_header_chop](nng_msg_header_chop.md)
+[nng_msg_header_insert](nng_msg_header_insert.md)
+[nng_msg_header_len](nng_msg_header_len.md),
diff --git a/docs/reference/src/api/msg/nng_msg_insert.3.adoc b/docs/reference/src/api/msg/nng_msg_insert.3.adoc
deleted file mode 100644
index 25f98fce..00000000
--- a/docs/reference/src/api/msg/nng_msg_insert.3.adoc
+++ /dev/null
@@ -1,63 +0,0 @@
-= nng_msg_insert(3)
-//
-// Copyright 2020 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_msg_insert - prepend to message body
-
-== SYNOPSIS
-
-[source, c]
-----
-#include <nng/nng.h>
-
-int nng_msg_insert(nng_msg *msg, const void *val, size_t size);
-int nng_msg_insert_u16(nng_msg *msg, uint16_t val16);
-int nng_msg_insert_u32(nng_msg *msg, uint32_t val32);
-int nng_msg_insert_u64(nng_msg *msg, uint64_t val64);
-----
-
-== DESCRIPTION
-
-The `nng_msg_insert()` family of functions prepends data to
-the front of the body of message _msg_, reallocating it if necessary.
-The first function prepends _size_ bytes, copying them from _val_.
-The remaining functions prepend the specified value (such as _val32_)
-in network-byte order (big-endian).
-
-TIP: These functions make use of space pre-allocated in front of the
-message body if available, so they can often avoid performing any reallocation.
-Applications should use these instead of reallocating and copying message
-content themselves, in order to benefit from this capability.
-
-== RETURN VALUES
-
-These functions return 0 on success, and non-zero otherwise.
-
-== ERRORS
-
-[horizontal]
-`NNG_ENOMEM`:: Insufficient free memory exists.
-
-== SEE ALSO
-
-[.text-left]
-xref:nng_msg_alloc.3.adoc[nng_msg_alloc(3)],
-xref:nng_msg_append.3.adoc[nng_msg_append(3)],
-xref:nng_msg_body.3.adoc[nng_msg_body(3)],
-xref:nng_msg_chop.3.adoc[nng_msg_chop(3)],
-xref:nng_msg_free.3.adoc[nng_msg_free(3)],
-xref:nng_msg_len.3.adoc[nng_msg_len(3)],
-xref:nng_msg_realloc.3.adoc[nng_msg_realloc(3)],
-xref:nng_msg_trim.3.adoc[nng_msg_trim(3)],
-xref:nng_strerror.3.adoc[nng_strerror(3)],
-xref:nng_msg.5.adoc[nng_msg(5)],
-xref:nng.7.adoc[nng(7)]
diff --git a/docs/reference/src/api/msg/nng_msg_insert.md b/docs/reference/src/api/msg/nng_msg_insert.md
new file mode 100644
index 00000000..a369d3c4
--- /dev/null
+++ b/docs/reference/src/api/msg/nng_msg_insert.md
@@ -0,0 +1,53 @@
+# nng_msg_insert
+
+## NAME
+
+nng_msg_insert --- prepend to message body
+
+## SYNOPSIS
+
+```c
+#include <nng/nng.h>
+
+int nng_msg_insert(nng_msg *msg, const void *val, size_t size);
+int nng_msg_insert_u16(nng_msg *msg, uint16_t val16);
+int nng_msg_insert_u32(nng_msg *msg, uint32_t val32);
+int nng_msg_insert_u64(nng_msg *msg, uint64_t val64);
+```
+
+## DESCRIPTION
+
+The `nng_msg_insert()` family of functions prepends data to
+the front of the body of message _msg_, reallocating it if necessary.
+The first function prepends _size_ bytes, copying them from _val_.
+The remaining functions prepend the specified value (such as _val32_)
+in network-byte order (big-endian).
+
+> [!TIP]
+> These functions make use of space pre-allocated in front of the
+> message body if available, so they can often avoid performing any reallocation.
+> Applications should use these instead of reallocating and copying message
+> content themselves, in order to benefit from this capability.
+
+## RETURN VALUES
+
+These functions return 0 on success, and non-zero otherwise.
+
+## ERRORS
+
+- `NNG_ENOMEM`: Insufficient free memory exists.
+
+## SEE ALSO
+
+[nng_msg_alloc](nng_msg_alloc.md),
+[nng_msg_append](nng_msg_append.md),
+[nng_msg_body](nng_msg_body.md),
+[nng_msg_capacity](nng_msg_capacity.md),
+[nng_msg_chop](nng_msg_chop.md),
+[nng_msg_clear](nng_msg_chop.md),
+[nng_msg_free](nng_msg_free.md),
+[nng_msg_insert](nng_msg_insert.md),
+[nng_msg_len](nng_msg_len.md),
+[nng_msg_reserve](nng_msg_reserve.md),
+[nng_msg_realloc](nng_msg_realloc.md),
+[nng_msg_trim](nng_msg_trim.md)
diff --git a/docs/reference/src/api/msg/nng_msg_len.3.adoc b/docs/reference/src/api/msg/nng_msg_len.3.adoc
deleted file mode 100644
index 2a3dfe67..00000000
--- a/docs/reference/src/api/msg/nng_msg_len.3.adoc
+++ /dev/null
@@ -1,43 +0,0 @@
-= nng_msg_len(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_msg_len - return message body length
-
-== SYNOPSIS
-
-[source, c]
-----
-#include <nng/nng.h>
-
-size_t nng_msg_len(nng_msg *msg);
-----
-
-== DESCRIPTION
-
-The `nng_msg_len()` returns the length of the body of message _msg_.
-
-== RETURN VALUES
-
-Length of message body.
-
-== ERRORS
-
-None.
-
-== SEE ALSO
-
-[.text-left]
-xref:nng_msg_alloc.3.adoc[nng_msg_alloc(3)],
-xref:nng_msg_body.3.adoc[nng_msg_body(3)],
-xref:nng_msg.5.adoc[nng_msg(5)],
-xref:nng.7.adoc[nng(7)]
diff --git a/docs/reference/src/api/msg/nng_msg_len.md b/docs/reference/src/api/msg/nng_msg_len.md
new file mode 100644
index 00000000..c470955c
--- /dev/null
+++ b/docs/reference/src/api/msg/nng_msg_len.md
@@ -0,0 +1,26 @@
+# nng_msg_len
+
+## NAME
+
+nng_msg_len --- return message body length
+
+## SYNOPSIS
+
+```c
+#include <nng/nng.h>
+
+size_t nng_msg_len(nng_msg *msg);
+```
+
+## DESCRIPTION
+
+The `nng_msg_len()` returns the length of the body of message _msg_.
+
+## RETURN VALUES
+
+Length of message body.
+
+## SEE ALSO
+
+[nng_msg_alloc](nng_msg_alloc),
+[nng_msg_body](nng_msg_body)
diff --git a/docs/reference/src/api/msg/nng_msg_realloc.3.adoc b/docs/reference/src/api/msg/nng_msg_realloc.3.adoc
deleted file mode 100644
index bf407289..00000000
--- a/docs/reference/src/api/msg/nng_msg_realloc.3.adoc
+++ /dev/null
@@ -1,66 +0,0 @@
-= nng_msg_realloc(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_msg_realloc - reallocate a message
-
-== SYNOPSIS
-
-[source, c]
-----
-#include <nng/nng.h>
-
-int nng_msg_realloc(nng_msg *msg, size_t size);
-----
-
-== DESCRIPTION
-
-The `nng_msg_realloc()` function re-allocates a message so that it has
-a body of length _size_.
-This message attempts to avoid extra allocations,
-and will reuse the existing memory when possible.
-
-TIP: `nng_msg_realloc` is suitable for creating space for direct writing of data.
-When appending many small pieces of data to a message using xref:nng_msg_append.3.adoc[`nng_msg_append()`],
-allocations may be reduced by first using xref:nng_msg_reserve.3.adoc[`nng_msg_reserve()`]
-to create sufficient space.
-In any case, reallocating or appending to a message is guaranteed to succeed if the resulting
-body length is less than xref:nng_msg_capacity.3.adoc[`nng_msg_capacity()`]. 
-
-NOTE: Pointers to message body and header content obtained prior to this
-function must not be in use, as the underlying memory used for the message
-may have changed, particularly if the message size is increasing.
-
-== RETURN VALUES
-
-This function returns 0 on success, and non-zero otherwise.
-
-== ERRORS
-
-[horizontal]
-`NNG_ENOMEM`:: Insufficient free memory exists to reallocate a message.
-
-== SEE ALSO
-
-[.text-left]
-xref:nng_msg_reserve.3.adoc[nng_msg_reserve(3)],
-xref:nng_msg_alloc.3.adoc[nng_msg_alloc(3)],
-xref:nng_msg_append.3.adoc[nng_msg_append(3)],
-xref:nng_msg_body.3.adoc[nng_msg_body(3)],
-xref:nng_msg_chop.3.adoc[nng_msg_chop(3)],
-xref:nng_msg_free.3.adoc[nng_msg_free(3)],
-xref:nng_msg_insert.3.adoc[nng_msg_insert(3)],
-xref:nng_msg_len.3.adoc[nng_msg_len(3)],
-xref:nng_msg_trim.3.adoc[nng_msg_trim(3)],
-xref:nng_strerror.3.adoc[nng_strerror(3)],
-xref:nng_msg.5.adoc[nng_msg(5)],
-xref:nng.7.adoc[nng(7)]
diff --git a/docs/reference/src/api/msg/nng_msg_realloc.md b/docs/reference/src/api/msg/nng_msg_realloc.md
new file mode 100644
index 00000000..66d113aa
--- /dev/null
+++ b/docs/reference/src/api/msg/nng_msg_realloc.md
@@ -0,0 +1,53 @@
+# nng_msg_realloc(3)
+
+## NAME
+
+nng_msg_realloc --- reallocate a message
+
+## SYNOPSIS
+
+```c
+#include <nng/nng.h>
+
+int nng_msg_realloc(nng_msg *msg, size_t size);
+```
+
+## DESCRIPTION
+
+The `nng_msg_realloc()` function re-allocates a message so that it has
+a body of length _size_.
+This message attempts to avoid extra allocations,
+and will reuse the existing memory when possible.
+
+TIP: `nng_msg_realloc` is suitable for creating space for direct writing of data.
+When appending many small pieces of data to a message using [`nng_msg_append()`](nng_msg_append.md),
+allocations may be reduced by first using
+[`nng_msg_reserve()`](nng_msg_reserve.md)
+to create sufficient space.
+In any case, reallocating or appending to a message is guaranteed to succeed if the resulting
+body length is less than [`nng_msg_capacity()`](nng_msg_capacity.md).
+
+> [!NOTE]
+> Pointers to message body and header content obtained prior to this
+> function must not be in use, as the underlying memory used for the message
+> may have changed, particularly if the message size is increasing.
+
+## RETURN VALUES
+
+This function returns 0 on success, and non-zero otherwise.
+
+## ERRORS
+
+- `NNG_ENOMEM`: Insufficient free memory exists to reallocate a message.
+
+## SEE ALSO
+
+[nng_msg_alloc](nng_msg_alloc.md),
+[nng_msg_reserve](nng_msg_reserve.md),
+[nng_msg_append](nng_msg_append.md),
+[nng_msg_body](nng_msg_body.md),
+[nng_msg_chop](nng_msg_chop.md),
+[nng_msg_free](nng_msg_free.md),
+[nng_msg_insert](nng_msg_insert.md),
+[nng_msg_len](nng_msg_len.md),
+[nng_msg_trim](nng_msg_trim.md)
diff --git a/docs/reference/src/api/msg/nng_msg_reserve.3.adoc b/docs/reference/src/api/msg/nng_msg_reserve.3.adoc
deleted file mode 100644
index 254c1e94..00000000
--- a/docs/reference/src/api/msg/nng_msg_reserve.3.adoc
+++ /dev/null
@@ -1,63 +0,0 @@
-= nng_msg_reserve(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_msg_reserve - reserve storage for a message
-
-== SYNOPSIS
-
-[source, c]
-----
-#include <nng/nng.h>
-
-int nng_msg_reserve(nng_msg *msg, size_t capacity);
-----
-
-== DESCRIPTION
-
-The `nng_msg_reserve()` function ensures a message has allocated enough storage 
-to accommodate a body of the given length.
-This message attempts to avoid extra allocations,
-and will reuse the existing memory when possible.
-
-TIP: Using this message before xref:nng_msg_append.3.adoc[`nng_msg_append()`]
-will prevent additional memory allocations until the message's length exceeds
-the alotted capacity.
-
-NOTE: Pointers to message body and header content obtained prior to this
-function must not be in use, as the underlying memory used for the message
-may have changed, particularly if the message capacity is increasing.
-
-== RETURN VALUES
-
-This function returns 0 on success, and non-zero otherwise.
-
-== ERRORS
-
-[horizontal]
-`NNG_ENOMEM`:: Insufficient free memory exists to reallocate a message.
-
-== SEE ALSO
-
-[.text-left]
-xref:nng_msg_capacity.3.adoc[nng_msg_capacity(3)],
-xref:nng_msg_alloc.3.adoc[nng_msg_alloc(3)],
-xref:nng_msg_append.3.adoc[nng_msg_append(3)],
-xref:nng_msg_body.3.adoc[nng_msg_body(3)],
-xref:nng_msg_chop.3.adoc[nng_msg_chop(3)],
-xref:nng_msg_free.3.adoc[nng_msg_free(3)],
-xref:nng_msg_insert.3.adoc[nng_msg_insert(3)],
-xref:nng_msg_len.3.adoc[nng_msg_len(3)],
-xref:nng_msg_trim.3.adoc[nng_msg_trim(3)],
-xref:nng_strerror.3.adoc[nng_strerror(3)],
-xref:nng_msg.5.adoc[nng_msg(5)],
-xref:nng.7.adoc[nng(7)]
diff --git a/docs/reference/src/api/msg/nng_msg_reserve.md b/docs/reference/src/api/msg/nng_msg_reserve.md
new file mode 100644
index 00000000..2d96ac8b
--- /dev/null
+++ b/docs/reference/src/api/msg/nng_msg_reserve.md
@@ -0,0 +1,46 @@
+# nng_msg_reserve
+
+## NAME
+
+nng_msg_reserve --- reserve storage for a message
+
+## SYNOPSIS
+
+```c
+#include <nng/nng.h>
+
+int nng_msg_reserve(nng_msg *msg, size_t capacity);
+```
+
+## DESCRIPTION
+
+The `nng_msg_reserve()` function ensures a message has allocated enough storage
+to accommodate a body of the given length.
+This message attempts to avoid extra allocations,
+and will reuse the existing memory when possible.
+
+> [!TIP]
+> Using this message before [`nng_msg_append()`](nng_msg_append.md)
+> will prevent additional memory allocations until the message's length exceeds
+> the alotted capacity.
+
+> [!IMPORTANT]
+> Pointers to message body and header content obtained prior to this
+> function must not be in use, as the underlying memory used for the message
+> may have changed, particularly if the message capacity is increasing.
+
+## RETURN VALUES
+
+This function returns 0 on success, and non-zero otherwise.
+
+## ERRORS
+
+- `NNG_ENOMEM`: Insufficient free memory exists to reallocate a message.
+
+## SEE ALSO
+
+[nng_msg_alloc](nng_msg_alloc.md),
+[nng_msg_append](nng_msg_append.md),
+[nng_msg_capacity](nng_msg_capacity.md),
+[nng_msg_insert](nng_msg_insert.md),
+[nng_msg_len](nng_msg_len.md)
diff --git a/docs/reference/src/api/msg/nng_msg_set_pipe.3.adoc b/docs/reference/src/api/msg/nng_msg_set_pipe.3.adoc
deleted file mode 100644
index c95cc83f..00000000
--- a/docs/reference/src/api/msg/nng_msg_set_pipe.3.adoc
+++ /dev/null
@@ -1,50 +0,0 @@
-= nng_msg_set_pipe(3)
-//
-// Copyright 2019 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_msg_set_pipe - set pipe for message
-
-== SYNOPSIS
-
-[source, c]
-----
-#include <nng/nng.h>
-
-void nng_msg_set_pipe(nng_msg *msg, nng_pipe p);
-----
-
-== DESCRIPTION
-
-The `nng_msg_set_pipe()` sets the pipe associated with message _m_ to _p_.
-This is most often useful when used with protocols that support directing
-a message to a specific peer.
-For example the xref:nng_pair.7.adoc[_pair_] version 1 protocol can do
-this when `NNG_OPT_PAIR1_POLY` mode is set.
-
-NOTE: Not all protocols support overriding the destination pipe.
-
-== RETURN VALUES
-
-None.
-
-== ERRORS
-
-None.
-
-== SEE ALSO
-
-[.text-left]
-xref:nng_msg_alloc.3.adoc[nng_msg_alloc(3)],
-xref:nng_msg_get_pipe.3.adoc[nng_msg_get_pipe(3)],
-xref:nng_pipe_getopt.3.adoc[nng_pipe_getopt(3)],
-xref:nng_msg.5.adoc[nng_msg(5)],
-xref:nng.7.adoc[nng(7)]
diff --git a/docs/reference/src/api/msg/nng_msg_set_pipe.md b/docs/reference/src/api/msg/nng_msg_set_pipe.md
new file mode 100644
index 00000000..58f339ca
--- /dev/null
+++ b/docs/reference/src/api/msg/nng_msg_set_pipe.md
@@ -0,0 +1,29 @@
+# nng_msg_set_pipe
+
+## NAME
+
+nng_msg_set_pipe --- set pipe for message
+
+## SYNOPSIS
+
+```c
+#include <nng/nng.h>
+
+void nng_msg_set_pipe(nng_msg *msg, nng_pipe p);
+```
+
+## DESCRIPTION
+
+The `nng_msg_set_pipe()` sets the pipe associated with message _m_ to _p_.
+This is most often useful when used with protocols that support directing
+a message to a specific peer.
+For example the [_PAIR_](../protocols/pair.md) version 1 protocol can do
+this when `NNG_OPT_PAIR1_POLY` mode is set.
+
+> [!NOTE]
+> Not all protocols support overriding the destination pipe.
+
+## SEE ALSO
+
+[nng_msg_alloc](nng_msg_alloc.md),
+[nng_msg_get_pipe](nng_msg_get_pipe.md)