          \/ F F - N O   L I N E   W R A P \/

Tells the editor that only the first part of any multipart line should be
displayed (e.g. by V-VIEW or after an edited line has been accepted).

Parameter
 <yes/no arg> one of 'yes', 'no', 'true', 'false', 'on', 'off' with the obvious
              meanings. Optional - if not specified the current state is
              inverted.
