* lisp/simple.el (newline-and-indent): Mention `C-o' in the doc
string.
In some text modes, where TAB inserts a tab, this command indents to the
column specified by the function `current-left-margin'.
-With ARG, perform this action that many times."
+With ARG, perform this action that many times.
+
+Also see `open-line' (bound to \\[open-line]) for a command that
+just inserts a newline without doing any indentation."
(interactive "*p")
(delete-horizontal-space t)
(unless arg