this.barPadding = 10

this.fill = true

True to fill the bars.

this.highlightMouseOver = true

True to highlight slice when moused over.  This must be false to enable highlightMouseDown to highlight when clicking on a slice.

this.highlightMouseDown = false

True to highlight when a mouse button is pressed over a slice.  This will be disabled if highlightMouseOver is true.

this.highlightColors = []

an array of colors to use when highlighting a slice.

this.synchronizeHighlight = false

Index of another series to highlight when this series is highlighted. null or false to not synchronize.

this.offsetBars = false

False will center bars on their y value.  True will push bars up by 1/2 bar width to fill between their y values.  If true, there needs to be 1 more tick than there are bars.