Bug 119603 [api][content assist] allow contributions to filter and sort proposals
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/PreferenceConstants.java
* Value is of type <code>String</code>. A RGB color value encoded as a string
	 * using class <code>PreferenceConverter</code>
	 * </p>
	 * 
	 * @see org.eclipse.jface.resource.StringConverter
	 * @see org.eclipse.jface.preference.PreferenceConverter
	 */
	public final static String EDITOR_STRING_COLOR= IJavaColorConstants.JAVA_STRING;
	/**
	 * A named preference that controls whether string constants are rendered in bold.
	 * <p>
	 * Value is of type <code>Boolean</code>.
	 * </p>
	 */
	public final static String EDITOR_STRING_BOLD= IJavaColorConstants.JAVA_STRING + EDITOR_BOLD_SUFFIX;
	/**
	 * A named preference that controls whether string constants are rendered in italic.
	 * <p>
	 * Value is of type <code>Boolean</code>.
	 * </p>
	 * 
	 * @since 3.0
	 */
	public final static String EDITOR_STRING_ITALIC= IJavaColorConstants.JAVA_STRING + EDITOR_ITALIC_SUFFIX;
	
	/**
	 * A named preference that controls whether string constants are rendered in strikethrough.
	 * <p>
	 * Value is of type <code>Boolean</code>.
	 * </p>