In (info "(org) Plain lists"):
`M-<RET>' (`org-insert-heading')
Insert new item at current level. With a prefix argument, force a
new heading (*note Structure editing::). If this command is used
in the middle of an item, that item is _split_ in two, and the
second part becomes the new item(7). If this command is executed
_before item's body_, the new item is created _before_ the current
one.
Why is `before item's body' emphasized? As far as I'm concerned, only
`before' should be emphasized.
BTW, why is the node name `Plain lists'? In Emacs manuals, all the
node name are made of capitalized words, for example:
(info "(emacs) Saving Emacs Sessions")
(info "(elisp) Syntax Tables")
(info "(widget) Widget Wishlist")
...
--
Best regards, Xue Fuqiao.
http://www.emacswiki.org/emacs/XueFuqiao