These commands are used for editing text on a line. The C character means press the Control Key.
Delete the character before point.
Delete the character after point.
Forward kill word.
Backward kill word.
Kill to the end of the line.
Kill line from the beginning, erasing input.
Interpret following character literally. Do not treat it specially. This can be used to, e.g., type in a literal ? rather than do help completion.