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─────Run-Time Library───────────────────────────────────────────────────────
 
  Include:   <pgchart.h>
 
  Syntax:    short _pg_chartpie( _chartenv __far *env,
                                 char __far *__far *categories,
                                 float __far *values,
                                 short __far *explode, short n );
 
  Returns:   a nonzero value in the case of errors, or 0 if successful.
 
  See also:  _pg_analyzepie, _pg_chart, _pg_chartscatter,
             _pg_initchart, _pg_defaultchart
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