Dot Density Theme Definition

This is an example of a definition for a dot density theme:

<FeatureLayer id="id5" name="USA" alias="USA" volatile="unknown">
				<DataSourceRef ref="id4"/>
				<FeatureStyleModifierThemeList>
					<FeatureStyleDensityTheme id="id6" alias="Dot Density Theme id6" name="Dot Density with Pop_1990">
						<DensityValueExpression>
							<NumericValueExpression>
								<AttributeName>Pop_1990</AttributeName>
							</NumericValueExpression>
						</DensityValueExpression>
						<ValuePerDot>600000</ValuePerDot>
						<DotStyle>
							<PointStyle>
								<FontSymbol text=""" size="4" size-unit="mapinfo:length pt" stroke="rgb(255,0,0)" stroke-opacity="1" family="MapInfo 3.0 Compatible"/>
							</PointStyle>
						</DotStyle>
					</FeatureStyleDensityTheme>
				</FeatureStyleModifierThemeList>
			</FeatureLayer>