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
English writing style works are noted in a uniform way. Typically, students are encouraged to use a style commonly adopted by journals publishing articles in the field of study. The list of "Style Manuals & Guides", from the University of Memphis Libraries, includes thirty academic style manuals that are currently in print, and twelve that are available on-line. Citation of referenced works is a key element in academic style. The requirements for writing and citing articles accessed on-line may sometimes differ from those for writing and citing printed works. Some of the details are covered in "The Columbia Guide to Online Style". English