(except possibly the prompt) is sent to the inferior process.
Line mode is basically the original shell mode from earlier Emacs versions.
-To switch from line mode to character mode type @kbd{C-c c}.
-To switch from character mode to line mode type @kbd{C-c l}.
+To switch from line mode to character mode type @kbd{C-c C-k}.
+To switch from character mode to line mode type @kbd{C-c C-j}.
In either mode, "echoing" of user input is handled by the inferior.
Therefor, in line mode after an input line at the end of the buffer