Bug 127070 SVG small font is always antialiased
SVG uses glyphs to render fonts, which cause small fonts to be always anti-aliased (making them slightly blurry), and "low quality SVG" (no antialiasing) text to be almost unreadable. As a more minor side-effect this also causes the SVG source to be not very readable and large in size.
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGRendererImpl.java
sb.append(","); 
				}
				if (components.size() > 0)
					sb.append(")"); 
				elm.setAttribute("onmousedown", 
						"toggleLabelsVisibility(evt, " 
								+ sb.toString() + ")"); 							
				setCursor(elm);
	
			}
		}
		
		
	}
	/**
	 * Helper function that will determine if the source object is a series component of the chart.
	 * 
	 * @param src StructureSource that is stored in the primitive render event.
	 * @return null if the source object is not a series otherwise it returns the StructureSource.
	 */
	private StructureSource isSeries(StructureSource src){
		if (src instanceof WrappedStructureSource){
			WrappedStructureSource wss = (WrappedStructureSource)src;
			while (wss != null){
				if (wss.getType() == StructureType.SERIES) {
					return wss;
				}
				if (wss.getParent().getType() == StructureType.SERIES){
					return wss.getParent();
				}