Scrolls the message backwards. When the top of the message is hit, moves to the previous message. Scrolls the message forward. When the bottom of the message is hit, moves to the next message. It is a cons cell and the ratio of its car and cdr value corresponds to the ratio of Summary and Message windows.
Initial setting is nil.
All fields that match this list will be hidden in message buffer. Each elements are regexp of field-name. Initial setting is nil. All fields that match this list will be hidden in message buffer. Each elements are regexp of field-name.