Ikebana a piece's color combinations, natural shapes, graceful lines, and the implied meaning of the arrangement. Another common but not exclusive aspect present in "ikebana" is its employment of minimalism. Some arrangements may consist of only a minimal number of blooms interspersed among stalks and leaves. The structure of some Japanese flower arrangements is based on a scalene triangle delineated by three main points, usually twigs, considered in some schools to symbolize heaven, human, and earth, or sun, moon, and earth. Use of these terms is limited to certain schools and is not customary in more traditional schools. A notable exception
Runestone styles Pr2 correspond to the Ringerike style, whereas Pr3, Pr4 and Pr5 belong to what is more widely known as the Urnes style. Below follows a brief presentation of the various styles by showing sample runestones according to Rundata's annotation. RAK is the oldest style and covers the period 980-1015 AD, but the Rundata project also includes the older runestones in this group, as well as younger ones. This style has no dragon heads and the ends of the runic bands are straight. This style is from the period c. 1010/1015 to c. 1040/1050, when Pr3 appeared. It is characterized by