of a two sided piece) a "physical comp" is preferred to a computerized sketch because fundamental physical relationships (for example, position and show-through of die-cuts, or inadvertently designing Möbius strips) can be missed in a two-dimensional sketch. A hand-rendered comp may be useful in helping the client refrain from "nitpicking" the production quality and focus on the design idea. In the overall creation process there is also a distinction between finish render and final render. Finish rendering refers to the process, and final rendering refers to the schedule. The first finish rendering may not be the final rendering; the first finish rendering could be the first of many renderings, with each subsequent finish rendering needing refinement before the final version is created. The illustration element may incorporate stock photography, clip art, or other found material that gives an idea of what should be visually communicated, before entering any negotiations concerning the rights to use a specific image for the purpose. Picture agencies may encourage such use free of charge, in the hope that the comp image (sometimes referred to as a "positional" image) will end up being used in the final product. For this reason, it is sometimes mistakenly believed that "comp" is short for "complimentary," as it is in some other promotional contexts. The word "comp" can also be used as a verb. For example, an artist may "comp something up"; that is, they will create a comp. "Comp" may also stand for "composition" or "composite layout". See also Animatic Previsualization Communication design Website wireframe Communication design Design