The term "action" constitutes one of the earliest styles within modern performance art. In part, it serves to distinguish the performance from traditional forms of entertainment, but it also highlights an aspect of the way performers viewed their activities. Some saw their performances as related to the kind of dramatic encounter between painter and painting that critic Harold Rosenberg talked of in his essay 'The American Action Painters' (1952). Others liked the word action for its open-endedness, its suggestion than any kind of activity could constitute a performance. For example, early conceptual actions by Yoko Ono consisted of a set of proposals that the participant could undertake, such as, "draw an imaginary map...go walking on an actual street according to the map..."