apparencef(A customized user interface that overlays an existing user interface. A skin customizes the look of the program but does not affect its functionality. Programs that allow the use of skins usually make standards available for the creation and distribution of new skins)
skinThe tissue forming the outer covering of the vertebrate body: it consists of two layers, the outermost of which may be covered with hair, scales, feathers, etc. It is mainly protective and sensory in functionv
