ribbon

#1
Plot( 10, /* defines the height of the ribbon in percent of pane width*/ "ribbon",
IIf( uptrend, colorGreen, IIf( downtrend, colorRed, colorTan )), /* choose color */
styleOwnScale|styleArea|styleNoLabel, -0.7, 100 );

in the above code -0.7, and 100 stands for what ?
 

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