Typographic units are the units of measurement used in typography or typesetting. Some style guides focus on specific topic areas such as graphic design, including typography. Fonts with OpenType, Apple Advanced Typography or SIL Graphite features can be adjusted. Graphic designers are expected to be proficient in software programs for image-making, typography and layout. Arabic calligraphy serves as a major source of inspiration for Arabic typography. Visual rhetoric is the art of effective communication through images, typography, and texts. In Europe, he gained recognition for typography and exhibition design. This is also exemplified by designs in typography and computer graphics. Bass's film posters are characterized by a distinctive typography and minimalistic style. Letter topology has practical relevance in stencil typography. He experimented with various poetic metres, punctuation, obscure allusions and typography. Cyrillic uppercase and lowercase letter forms are not as differentiated as in Latin typography. The new Boca Juniors image also featured new typography and style. Two-dimensional models are important in computer typography and technical drawing. Their publications typically address orthography and grammar as opposed to matters of typography.