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											| What is a performer? 
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											| The same symbols keep reappearing in Katers drawings, each of which represents a sphere of meaning. Kater calls them performers. 
 According to Kater, these performers appear together as an ensemble -- on stage, on paper, in a stage set and on other lines and surfaces.
 
 The following is a comprehensive list of  performers.
 
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								|  |  |  |  |  | Doing
 (< 1998). 'do, work, produce, doing, making plans and carrying them out'.
 Attention: appears in two versions!
 Ill. of performer reminds one a sawhorse.
 a) traditional form (spatial and with energy line(s))
 b) more recent short version
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								|  |  |  |  |  | Money
 (< 1999). 'Money, greed, property, wealth, profit-driven thinking'.
 Ill. The shape is derived from a peanut; in many variations with and without any drawing on the inside.
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								|  |  |  |  | to all performers 
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