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Sets the position and alignment of the chart heading:
chSet 'hstyle' 'right,bottom'
Options
centre:left:right ... Horizontal placement
top:bottom ... Vertical placement
transparent:opaque ... Blank behind text
ruled:norule ... Rule across chart
pitch=120% ... Set the inter-line spacing
effect=id ... Attach a defined effect to the text
Options in bold are the normal defaults. Use style ‘ruled’ to rule across the entire chart area, just below the heading. You can set the line-spacing as a percentage of the font-size, or as absolute points.
To include a defined effect (such as an SVG shadow filter or animation) to the text, give the effect id here:
chSet 'Hstyle' 'effect=98'
You can list multiple effects (chained with ‘+’) to apply several filters or animations. These will apply to both the heading and subheading.