When the field of the shield is filled with alternately coloured horizontal lines, this is known as barry, obviously because it is like having many separate bars across the field A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:Barry. As well as being drawn with straight edges, there some decorative effects that can be used, and, with careful, these can be very pleasing. The decorations are typically much smaller than those used on the major ordinaries, such as the fess so care must be taken to ensure clarity. The decorative edge pattern Wavy, sometimes written as undy is, for obvious reasons, associated with both water and the sea The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P40. Indeed, a roundel with alternating bars of azure and argent (blue and white) is known by the shorthand term fountain, representing water at the bottom of a well A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:Water. Other colours have also been used and the result can be very pleasing to the eye.