fe2ab545_pp_Reference__Type
[Name] choices [Opt] opt [Description] If the word choices appears after the minimum and maximum values, subsequent symbol arguments are taken as a list of discrete settings for the object and are displayed as such in the Parameters view. As an example pp 1 Mode 0 3 choices Thin Medium Fat would divide the parameter space into three values. 0 (anything less than 0.33) would correspond to Thin, 0.5 (and anything between 0.33 and 0.67) would correspond to Medium, and 1 (and anything between 0.67 and 1.0) would correspond to Fat. Only the name of the choice, rather than the actual value of the parameter, is displayed in the Parameters view. [Type] 
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pp Reference