.XY SET BAR W:WITHIN 
This subroutine sets the subBar width in a chart layer.
  Usage: 
      PASS         <subBar_width>             FIELD            SHARE? N
      GOSUB    0CD .XY SET BAR W:WITHIN
      *        Check for error
      IF       0CD .XY SET BAR W:WITHIN       NE
  Description: 
Sets the bar width of the subbars in a bar chart layer. <subBar_width> is an optional parameter and sets the width of the bars in a bar group, in pixels. This argument only applies to multi-bar charts.
See 
.XY SET BAR W:GROUP to set <bar_width> only, or 
.XY SET BAR W to set both <bar_width and <subBar_width> at the same time.
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-- 
JeanNeron - 2011-11-08