Broken lines give us a feeling of life and movement. But they should
not be used for the permanent decorative lines of a room--the lines of
the walls, openings, hangings, draperies, carpets, or large, immovable
pieces of furniture which have a fixed place. In pillows which break
the long back line of a couch, in cornice moldings, lambrequin bottoms,
chair backs, screens, etc., they lend life. But as a rule they should
be sparingly used.