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Participants are responsible for abiding by the campus chalking policy, which restricts chalking to concrete or asphalt exterior sidewalks that are exposed to natural elements. Chalking must be done by using water-soluble stick-chalk that fades away with the natural elements within a few days. Use of other types of chalk, including but not limited to, spray chalk, chalk paint, chalk markers, and other forms of liquid or powered chalk is not permitted.