The fesse is a broad horizontal band across the centre of the shield, in very ancient times it was said to occupy one third of the area height of the shield A Complete Guide to Heraldry, A.C. Fox-Davies, Bonanza (re-print of 1909 Edition), New York, 1978, P117, however it soon became somewhat narrower. This created an opportunity to add decorative edging to the band, of many forms, and to very pleasing artisitic effect, at least close up – it must be admitted that at distance some of the forms are hard to distinguish! 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.