Edging is applied to ensure that, for example, can not shift the pavement, but also to keep the gravel / ground within acceptable limits. For this, often retaining straps applied, these are available in natural stone and concrete with different sizes and colors. Choice depends on the application, such as in a terrace confinement is usually sufficient, a retaining band of "five to fifteen 'centimeter. When a heavier tax load dependent, quantity and weight heavier retaining belt is used. With stacking blocks can easily increases be made whether or not graduated. A good surface with rubble paving or stabilizing layer is certainly desirable at higher walls. Elements can be cemented or glued, or be stacked separately according to the method in prehistoric times and filled with, for example plants or turf.