whose value is changed -- update their ':version' tag.
Think about whether your change requires updating the manuals. If you
-know it does not, mark the NEWS entry with "---". If you know
-that *all* the necessary documentation updates have been made as part
-of your changes or those by others, mark the entry with "+++".
+know it does not, mark the NEWS entry with "---" before the entry. If
+you know that *all* the necessary documentation updates have been made
+as part of your changes or those by others, mark the entry with "+++".
Otherwise, do not mark it.
If your change requires updating the manuals to document new