Art car recent years the festival has been forced to limit the number of vehicles on the playa. As such they have restricted the vehicles that are licensed to what they are now calling "mutant vehicles". There has been some confusion within the Burning Man and Art Car communities over these two terms, with some believing the terms are simply synonyms. According to art car artist and Art Car Fest organizer Philo Northrup, art cars are "street-legal vehicles that have been permanently transformed into mobile sculptures". According to the Burning Man DMV ("Department of Mutant Vehicles"), Mutant Vehicles are "'art on wheels':
Form and document creation is abstract structure. This is the idea that text has a graphical component. Text incorporates a graphical component not only because the words are: "often accompanied by conventional graphics such as pictures or diagrams, but they themselves form graphical elements such as titles, headings, chapters, sections, captions, paragraphs, and bulleted lists". When considering abstract structure in planning a form or document, a technical communicator must also look at what Richard Power, Nadjet Bouayad-Agha, and Donia Scott call document structure: "the organization of a document into graphical constituents like sections, paragraphs, sentences, bulleted lists, and figures". This document structure also goes