spec: Use null if no notes are present

43 files changed, 43 insertions, 86 deletions

diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFBUFFERMAXSIZE.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFBUFFERMAXSIZE.yml
index e4de34e9..b09f1e90 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFBUFFERMAXSIZE.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFBUFFERMAXSIZE.yml
@@ -7,8 +7,7 @@ appl-config-option-description: |
   in bytes.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_BDBUF_BUFFER_MAX_SIZE
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   min: 0
   custom:
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFBUFFERMINSIZE.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFBUFFERMINSIZE.yml
index 6231ff95..6a331363 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFBUFFERMINSIZE.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFBUFFERMINSIZE.yml
@@ -7,8 +7,7 @@ appl-config-option-description: |
   in bytes.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_BDBUF_BUFFER_MIN_SIZE
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   min: 0
   max: '``UINT32_MAX``'
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFCACHEMEMORYSIZE.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFCACHEMEMORYSIZE.yml
index 3f11dd08..41b722ec 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFCACHEMEMORYSIZE.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFCACHEMEMORYSIZE.yml
@@ -7,8 +7,7 @@ appl-config-option-description: |
   in bytes.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_BDBUF_CACHE_MEMORY_SIZE
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   min: 0
   max: '``SIZE_MAX``'
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFMAXWRITEBLOCKS.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFMAXWRITEBLOCKS.yml
index ee159e9a..9940a847 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFMAXWRITEBLOCKS.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFMAXWRITEBLOCKS.yml
@@ -7,8 +7,7 @@ appl-config-option-description: |
   request.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_BDBUF_MAX_WRITE_BLOCKS
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   min: 0
   max: '``UINT32_MAX``'
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFREADAHEADTASKPRIORITY.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFREADAHEADTASKPRIORITY.yml
index bf854b4f..acffacc2 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFREADAHEADTASKPRIORITY.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFREADAHEADTASKPRIORITY.yml
@@ -4,8 +4,7 @@ appl-config-option-type: integer
 appl-config-option-default-value: 15
 appl-config-option-description: |
   The value of this configuration option defines the read-ahead task priority.
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_BDBUF_READ_AHEAD_TASK_PRIORITY
 appl-config-option-constraint:
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFTASKSTACKSIZE.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFTASKSTACKSIZE.yml
index bea28d10..e35448d2 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFTASKSTACKSIZE.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-BDBUFTASKSTACKSIZE.yml
@@ -7,8 +7,7 @@ appl-config-option-description: |
   Block Device Cache tasks in bytes.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_BDBUF_TASK_STACK_SIZE
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   min: ':ref:`CONFIGURE_MINIMUM_TASK_STACK_SIZE`'
   links:
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-BSPIDLETASKSTACKSIZE.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-BSPIDLETASKSTACKSIZE.yml
index 47df5cd2..e2d8e0ea 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-BSPIDLETASKSTACKSIZE.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-BSPIDLETASKSTACKSIZE.yml
@@ -14,8 +14,7 @@ appl-config-option-description: |
   :ref:`CONFIGURE_IDLE_TASK_SIZE`.
 appl-config-option-index: []
 appl-config-option-name: BSP_IDLE_TASK_STACK_SIZE
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   links:
   - RTEMS-ACFG-OPT-CONSTRAINTIDLESTACKAREA
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-BSPINTERRUPTSTACKSIZE.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-BSPINTERRUPTSTACKSIZE.yml
index 56933531..dc6f580d 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-BSPINTERRUPTSTACKSIZE.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-BSPINTERRUPTSTACKSIZE.yml
@@ -14,8 +14,7 @@ appl-config-option-description: |
   :ref:`CONFIGURE_INTERRUPT_STACK_SIZE`.
 appl-config-option-index: []
 appl-config-option-name: BSP_INTERRUPT_STACK_SIZE
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   links:
   - RTEMS-ACFG-OPT-CONSTRAINTISRSTACKALIGN
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-DISABLEBSPSETTINGS.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-DISABLEBSPSETTINGS.yml
index 20f480eb..b6e1e2b5 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-DISABLEBSPSETTINGS.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-DISABLEBSPSETTINGS.yml
@@ -18,8 +18,7 @@ appl-config-option-description: |
   - :ref:`CONFIGURE_MALLOC_BSP_SUPPORTS_SBRK`
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_DISABLE_BSP_SETTINGS
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMALL.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMALL.yml
index 6085a60d..de576c0c 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMALL.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMALL.yml
@@ -19,8 +19,7 @@ appl-config-option-description: |
   - :ref:`CONFIGURE_FILESYSTEM_TFTPFS`.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_FILESYSTEM_ALL
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-type: feature-enable
 copyrights:
 - Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMFTPFS.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMFTPFS.yml
index 008c876b..7a7639cc 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMFTPFS.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMFTPFS.yml
@@ -6,8 +6,7 @@ appl-config-option-description: |
   can be mounted by the application.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_FILESYSTEM_FTPFS
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-type: feature-enable
 copyrights:
 - Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMJFFS2.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMJFFS2.yml
index 54899c20..0f73685d 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMJFFS2.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMJFFS2.yml
@@ -6,8 +6,7 @@ appl-config-option-description: |
   application.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_FILESYSTEM_JFFS2
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-type: feature-enable
 copyrights:
 - Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMNFS.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMNFS.yml
index dfa339e2..a583437e 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMNFS.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMNFS.yml
@@ -6,8 +6,7 @@ appl-config-option-description: |
   mounted by the application.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_FILESYSTEM_NFS
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-type: feature-enable
 copyrights:
 - Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMTFTPFS.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMTFTPFS.yml
index 9c23791a..53443ed1 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMTFTPFS.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-FILESYSTEMTFTPFS.yml
@@ -6,8 +6,7 @@ appl-config-option-description: |
   the application.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_FILESYSTEM_TFTPFS
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-type: feature-enable
 copyrights:
 - Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLECHMOD.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLECHMOD.yml
index 895b4283..acb8a7dd 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLECHMOD.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLECHMOD.yml
@@ -9,8 +9,7 @@ appl-config-option-description: |
   support changing the mode of files (no support for :c:func:`chmod`).
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_IMFS_DISABLE_CHMOD
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLECHOWN.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLECHOWN.yml
index f6c83561..c50993c9 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLECHOWN.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLECHOWN.yml
@@ -9,8 +9,7 @@ appl-config-option-description: |
   support changing the ownership of files (no support for :c:func:`chown`).
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_IMFS_DISABLE_CHOWN
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLELINK.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLELINK.yml
index 71ace56d..a0245421 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLELINK.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLELINK.yml
@@ -9,8 +9,7 @@ appl-config-option-description: |
   support hard links (no support for :c:func:`link`).
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_IMFS_DISABLE_LINK
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMKNOD.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMKNOD.yml
index 97386ce6..c63f0cea 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMKNOD.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMKNOD.yml
@@ -9,8 +9,7 @@ appl-config-option-description: |
   support making files (no support for :c:func:`mknod`).
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_IMFS_DISABLE_MKNOD
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMKNODDEVICE.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMKNODDEVICE.yml
index eaa52d2e..d3dc624e 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMKNODDEVICE.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMKNODDEVICE.yml
@@ -9,8 +9,7 @@ appl-config-option-description: |
   support making device files.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_IMFS_DISABLE_MKNOD_DEVICE
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMKNODFILE.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMKNODFILE.yml
index 9a05ac20..320c1237 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMKNODFILE.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMKNODFILE.yml
@@ -9,8 +9,7 @@ appl-config-option-description: |
   support making regular files.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_IMFS_DISABLE_MKNOD_FILE
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMOUNT.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMOUNT.yml
index d6c558e3..0e855a4c 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMOUNT.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEMOUNT.yml
@@ -9,8 +9,7 @@ appl-config-option-description: |
   support mounting other filesystems (no support for :c:func:`mount`).
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_IMFS_DISABLE_MOUNT
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEREADDIR.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEREADDIR.yml
index 2e8ca833..3f12fbc3 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEREADDIR.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEREADDIR.yml
@@ -10,8 +10,7 @@ appl-config-option-description: |
   possible to open files in a directory.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_IMFS_DISABLE_READDIR
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEREADLINK.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEREADLINK.yml
index c7dd6b90..d85ed775 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEREADLINK.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEREADLINK.yml
@@ -9,8 +9,7 @@ appl-config-option-description: |
   support reading symbolic links (no support for :c:func:`readlink`).
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_IMFS_DISABLE_READLINK
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLERENAME.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLERENAME.yml
index 8320907a..f05cc06d 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLERENAME.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLERENAME.yml
@@ -9,8 +9,7 @@ appl-config-option-description: |
   support renaming files (no support for :c:func:`rename`).
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_IMFS_DISABLE_RENAME
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLERMNOD.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLERMNOD.yml
index 9fbc0fe1..096811ba 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLERMNOD.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLERMNOD.yml
@@ -9,8 +9,7 @@ appl-config-option-description: |
   support removing files (no support for :c:func:`rmnod`).
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_IMFS_DISABLE_RMNOD
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLESYMLINK.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLESYMLINK.yml
index 9ad09b7a..cc763143 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLESYMLINK.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLESYMLINK.yml
@@ -9,8 +9,7 @@ appl-config-option-description: |
   support creating symbolic links (no support for :c:func:`symlink`).
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_IMFS_DISABLE_SYMLINK
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEUNMOUNT.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEUNMOUNT.yml
index e447f946..aff59701 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEUNMOUNT.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEUNMOUNT.yml
@@ -9,8 +9,7 @@ appl-config-option-description: |
   support unmounting other filesystems (no support for :c:func:`unmount`).
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_IMFS_DISABLE_UNMOUNT
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEUTIME.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEUTIME.yml
index 253418c8..65148d20 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEUTIME.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSDISABLEUTIME.yml
@@ -9,8 +9,7 @@ appl-config-option-description: |
   support changing file times (no support for :c:func:`utime`).
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_IMFS_DISABLE_UTIME
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSENABLEMKFIFO.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSENABLEMKFIFO.yml
index 84e1c667..cb552f74 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSENABLEMKFIFO.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-IMFSENABLEMKFIFO.yml
@@ -9,8 +9,7 @@ appl-config-option-description: |
   making FIFOs.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_IMFS_ENABLE_MKFIFO
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 copyrights:
 - Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 derived: false
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKARGUMENTS.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKARGUMENTS.yml
index dbb2fcd2..3277b5f4 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKARGUMENTS.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKARGUMENTS.yml
@@ -7,8 +7,7 @@ appl-config-option-description: |
   API initialization task.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_INIT_TASK_ARGUMENTS
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   custom:
   - |
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKATTRIBUTES.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKATTRIBUTES.yml
index 2aa8b694..f01442a7 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKATTRIBUTES.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKATTRIBUTES.yml
@@ -7,8 +7,7 @@ appl-config-option-description: |
   Classic API initialization task.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_INIT_TASK_ATTRIBUTES
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   custom:
   - |
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKINITIALMODES.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKINITIALMODES.yml
index ebc5f0b8..2ed61644 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKINITIALMODES.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKINITIALMODES.yml
@@ -9,8 +9,7 @@ appl-config-option-description: |
   the Classic API initialization task.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_INIT_TASK_INITIAL_MODES
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   custom:
   - |
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKPRIORITY.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKPRIORITY.yml
index 5ed5c392..e6994bb5 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKPRIORITY.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKPRIORITY.yml
@@ -7,8 +7,7 @@ appl-config-option-description: |
   Classic API initialization task.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_INIT_TASK_PRIORITY
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   links:
   - RTEMS-ACFG-OPT-CONSTRAINTPRIOCLASSIC
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKSTACKSIZE.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKSTACKSIZE.yml
index b2a80894..418e207a 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKSTACKSIZE.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-INITTASKSTACKSIZE.yml
@@ -7,8 +7,7 @@ appl-config-option-description: |
   Classic API initialization task.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_INIT_TASK_STACK_SIZE
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   min: ':ref:`CONFIGURE_MINIMUM_TASK_STACK_SIZE`'
   links:
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-MINPOSIXTHREADSTACKSIZE.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-MINPOSIXTHREADSTACKSIZE.yml
index 0ba4a8e8..bac7a298 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-MINPOSIXTHREADSTACKSIZE.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-MINPOSIXTHREADSTACKSIZE.yml
@@ -10,8 +10,7 @@ appl-config-option-description: |
 appl-config-option-index:
 - minimum POSIX thread stack size
 appl-config-option-name: CONFIGURE_MINIMUM_POSIX_THREAD_STACK_SIZE
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   links:
   - RTEMS-ACFG-OPT-CONSTRAINTBSPAPPMIN
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-MPEXTRASERVERSTACK.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-MPEXTRASERVERSTACK.yml
index fe064e17..02416bd4 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-MPEXTRASERVERSTACK.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-MPEXTRASERVERSTACK.yml
@@ -7,8 +7,7 @@ appl-config-option-description: |
   :ref:`CONFIGURE_MINIMUM_TASK_STACK_SIZE`.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_EXTRA_MPCI_RECEIVE_SERVER_STACK
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-type: integer
 appl-config-option-constraint:
   min: 0
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-MPMAXNODES.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-MPMAXNODES.yml
index 6ef75577..d68c3ff3 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-MPMAXNODES.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-MPMAXNODES.yml
@@ -7,8 +7,7 @@ appl-config-option-description: |
   a multiprocessor system.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_MP_MAXIMUM_NODES
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   min: 0
   max: '``UINT32_MAX``'
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-POSIXINITTHREADSTACKSIZE.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-POSIXINITTHREADSTACKSIZE.yml
index 184004c9..cfc9daca 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-POSIXINITTHREADSTACKSIZE.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-POSIXINITTHREADSTACKSIZE.yml
@@ -7,8 +7,7 @@ appl-config-option-description: |
   POSIX API initialization thread.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   min: ':ref:`CONFIGURE_MINIMUM_TASK_STACK_SIZE`'
   links:
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTBLOCKHOLD.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTBLOCKHOLD.yml
index bda539ba..c73f2206 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTBLOCKHOLD.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTBLOCKHOLD.yml
@@ -7,8 +7,7 @@ appl-config-option-description: |
   hold time in milliseconds.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_SWAPOUT_BLOCK_HOLD
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   min: 0
   max: '``UINT32_MAX``'
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTSWAPPERIOD.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTSWAPPERIOD.yml
index 543746fb..36ac0890 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTSWAPPERIOD.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTSWAPPERIOD.yml
@@ -7,8 +7,7 @@ appl-config-option-description: |
   in milliseconds.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_SWAPOUT_SWAP_PERIOD
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   min: 0
   max: '``UINT32_MAX``'
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTTASKPRIORITY.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTTASKPRIORITY.yml
index b506ced2..b3574f01 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTTASKPRIORITY.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTTASKPRIORITY.yml
@@ -6,8 +6,7 @@ appl-config-option-description: |
   The value of this configuration option defines the swapout task priority.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_SWAPOUT_TASK_PRIORITY
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   links:
   - RTEMS-ACFG-OPT-CONSTRAINTPRIOCLASSIC
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTWORKERTASKPRIORITY.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTWORKERTASKPRIORITY.yml
index b63d7c8c..b9c94531 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTWORKERTASKPRIORITY.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTWORKERTASKPRIORITY.yml
@@ -7,8 +7,7 @@ appl-config-option-description: |
   priority.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_SWAPOUT_WORKER_TASK_PRIORITY
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   links:
   - RTEMS-ACFG-OPT-CONSTRAINTPRIOCLASSIC
diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTWORKERTASKS.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTWORKERTASKS.yml
index 40003673..61056b08 100644
--- a/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTWORKERTASKS.yml
+++ b/spec/acfg/opt/RTEMS-ACFG-OPT-SWAPOUTWORKERTASKS.yml
@@ -6,8 +6,7 @@ appl-config-option-description: |
   The value of this configuration option defines the swapout worker task count.
 appl-config-option-index: []
 appl-config-option-name: CONFIGURE_SWAPOUT_WORKER_TASKS
-appl-config-option-notes: |
-  None.
+appl-config-option-notes: null
 appl-config-option-constraint:
   min: 0
   max: '``UINT32_MAX``'