Designs in balance (or equilibrium) have their parts arrangement planned, keeping a coherent visual pattern (color, shape, space). "Balance" is a concept based on human perception and the complex nature of the human senses of weight and proportion. Humans can evaluate these visual elements in several situations to find a sense of balance. A design composition does not have to be symmetrical or linear to be considered balanced, the balance is global to all elements even the absence of content. In this context perfectly symmetrical and linear compositions are not necessarily balanced and so asymmetrical or radial distributions of text and graphic elements can achieve balance in a composition.