Bug 99072 [preferences] Explain Ctrl modifier for code assistant
N20050608-0010 This was a polish item that we got to add. Easy fix. Approving for 3.1 RC2.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/CodeAssistConfigurationBlock.java
private static final Key PREF_CODEASSIST_AUTOACTIVATION= getJDTUIKey(PreferenceConstants.CODEASSIST_AUTOACTIVATION);
	private static final Key PREF_CODEASSIST_AUTOACTIVATION_DELAY= getJDTUIKey(PreferenceConstants.CODEASSIST_AUTOACTIVATION_DELAY);
	private static final Key PREF_CODEASSIST_AUTOINSERT= getJDTUIKey(PreferenceConstants.CODEASSIST_AUTOINSERT);
	private static final Key PREF_CODEASSIST_AUTOACTIVATION_TRIGGERS_JAVA= getJDTUIKey(PreferenceConstants.CODEASSIST_AUTOACTIVATION_TRIGGERS_JAVA);
	private static final Key PREF_CODEASSIST_AUTOACTIVATION_TRIGGERS_JAVADOC= getJDTUIKey(PreferenceConstants.CODEASSIST_AUTOACTIVATION_TRIGGERS_JAVADOC);
	private static final Key PREF_CODEASSIST_SHOW_VISIBLE_PROPOSALS= getJDTUIKey(PreferenceConstants.CODEASSIST_SHOW_VISIBLE_PROPOSALS);
	private static final Key PREF_CODEASSIST_ORDER_PROPOSALS= getJDTUIKey(PreferenceConstants.CODEASSIST_ORDER_PROPOSALS);
	private static final Key PREF_CODEASSIST_CASE_SENSITIVITY= getJDTUIKey(PreferenceConstants.CODEASSIST_CASE_SENSITIVITY);
	private static final Key PREF_CODEASSIST_ADDIMPORT= getJDTUIKey(PreferenceConstants.CODEASSIST_ADDIMPORT);
	private static final Key PREF_CODEASSIST_INSERT_COMPLETION= getJDTUIKey(PreferenceConstants.CODEASSIST_INSERT_COMPLETION);
	private static final Key PREF_CODEASSIST_FILL_ARGUMENT_NAMES= getJDTUIKey(PreferenceConstants.CODEASSIST_FILL_ARGUMENT_NAMES);
	private static final Key PREF_CODEASSIST_GUESS_METHOD_ARGUMENTS= getJDTUIKey(PreferenceConstants.CODEASSIST_GUESS_METHOD_ARGUMENTS);
	private static final Key PREF_CODEASSIST_PREFIX_COMPLETION= getJDTUIKey(PreferenceConstants.CODEASSIST_PREFIX_COMPLETION);
	private static final Key PREF_CODEASSIST_FORBIDDEN_REFERENCE_CHECK= getJDTCoreKey(JavaCore.CODEASSIST_FORBIDDEN_REFERENCE_CHECK);
	private static final Key PREF_CODEASSIST_DISCOURAGED_REFERENCE_CHECK= getJDTCoreKey(JavaCore.CODEASSIST_DISCOURAGED_REFERENCE_CHECK);
	private static Key[] getAllKeys() {
		return new Key[] {
				PREF_CODEASSIST_AUTOACTIVATION,
				PREF_CODEASSIST_AUTOACTIVATION_DELAY,
				PREF_CODEASSIST_AUTOINSERT,
				PREF_CODEASSIST_AUTOACTIVATION_TRIGGERS_JAVA,
				PREF_CODEASSIST_AUTOACTIVATION_TRIGGERS_JAVADOC,
				PREF_CODEASSIST_SHOW_VISIBLE_PROPOSALS,
				PREF_CODEASSIST_ORDER_PROPOSALS,
				PREF_CODEASSIST_CASE_SENSITIVITY,
				PREF_CODEASSIST_ADDIMPORT,