*** There are new commands in Comint mode.<BR>
C-c C-x fetches the "next" line from the input history;
that is, the line after the last line you got.
You can use this command to fetch successive lines, one by one.
<P>
C-c SPC accumulates lines of input.  More precisely, it arranges to
send the current line together with the following line, when you send
the following line.
<P>
C-c C-a if repeated twice consecutively now moves to the process mark,
which separates the pending input from the subprocess output and the
previously sent input.
<P>
C-c M-r now runs comint-previous-matching-input-from-input;
it searches for a previous command, using the current pending input
as the search string.
<P>