Hierarchy based on type is usually shaped by relationships of visual texture and tone; that is, letterforms, words and lines of type come together to form different tonal values and varying characteristics of patterns or texture. Depending on these tonal values and the scale and texture, the viewer will be attracted to a greater or lesser degree. Typeface, point size, tint, weight, letter spacing, line spacing and general spatial distribution are also important because they affect the density of type and, therefore, the lightness and darkness and the texture and tone.